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Finding the Fourth Proportional to 157,449.72, 217,272.76 and 89,457.71

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Solution

The fourth proportional to 157,449.72, 217,272.76 and 89,457.71 is: 123,447.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,449.72 : 217,272.76 = 89,457.71 : x
  2. Step 2: Convert to fraction form
    157,449.72/217,272.76 = 89,457.71/x
  3. Step 3: Cross multiply
    157,449.72x = 217,272.76 × 89,457.71
  4. Step 4: Simplify right side
    157,449.72x = 19,436,723,554.98
  5. Step 5: Solve for x
    x = 19,436,723,554.98/157,449.72
  6. Step 6: Final answer
    x = 123,447.18

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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.