Home / 115,033,015,111.80-172,549,522,667.70-87,138,739,903.80

Finding the Fourth Proportional to 115,033,015,111.80, 172,549,522,667.70 and 87,138,739,903.80

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Solution

The fourth proportional to 115,033,015,111.80, 172,549,522,667.70 and 87,138,739,903.80 is: 130,708,109,855.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,033,015,111.80 : 172,549,522,667.70 = 87,138,739,903.80 : x
  2. Step 2: Convert to fraction form
    115,033,015,111.80/172,549,522,667.70 = 87,138,739,903.80/x
  3. Step 3: Cross multiply
    115,033,015,111.80x = 172,549,522,667.70 × 87,138,739,903.80
  4. Step 4: Simplify right side
    115,033,015,111.80x = 15,035,747,976,265,554,984,960
  5. Step 5: Solve for x
    x = 15,035,747,976,265,554,984,960/115,033,015,111.80
  6. Step 6: Final answer
    x = 130,708,109,855.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.