Home / 115,207.80-172,811.70-109,764.60

Finding the Fourth Proportional to 115,207.80, 172,811.70 and 109,764.60

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Solution

The fourth proportional to 115,207.80, 172,811.70 and 109,764.60 is: 164,646.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,207.80 : 172,811.70 = 109,764.60 : x
  2. Step 2: Convert to fraction form
    115,207.80/172,811.70 = 109,764.60/x
  3. Step 3: Cross multiply
    115,207.80x = 172,811.70 × 109,764.60
  4. Step 4: Simplify right side
    115,207.80x = 18,968,607,125.82
  5. Step 5: Solve for x
    x = 18,968,607,125.82/115,207.80
  6. Step 6: Final answer
    x = 164,646.90

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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.