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Finding the Fourth Proportional to 144,805.28, 217,130.16 and 65,937.20

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Solution

The fourth proportional to 144,805.28, 217,130.16 and 65,937.20 is: 98,870.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,805.28 : 217,130.16 = 65,937.20 : x
  2. Step 2: Convert to fraction form
    144,805.28/217,130.16 = 65,937.20/x
  3. Step 3: Cross multiply
    144,805.28x = 217,130.16 × 65,937.20
  4. Step 4: Simplify right side
    144,805.28x = 14,316,954,785.95
  5. Step 5: Solve for x
    x = 14,316,954,785.95/144,805.28
  6. Step 6: Final answer
    x = 98,870.39

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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.