Home / 115,199.09-158,975.52-64,215.12

Finding the Fourth Proportional to 115,199.09, 158,975.52 and 64,215.12

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Solution

The fourth proportional to 115,199.09, 158,975.52 and 64,215.12 is: 88,617.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,199.09 : 158,975.52 = 64,215.12 : x
  2. Step 2: Convert to fraction form
    115,199.09/158,975.52 = 64,215.12/x
  3. Step 3: Cross multiply
    115,199.09x = 158,975.52 × 64,215.12
  4. Step 4: Simplify right side
    115,199.09x = 10,208,632,093.86
  5. Step 5: Solve for x
    x = 10,208,632,093.86/115,199.09
  6. Step 6: Final answer
    x = 88,617.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.