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Finding the Fourth Proportional to 157,272.23, 217,028.25 and 89,280.23

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Solution

The fourth proportional to 157,272.23, 217,028.25 and 89,280.23 is: 123,202.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,272.23 : 217,028.25 = 89,280.23 : x
  2. Step 2: Convert to fraction form
    157,272.23/217,028.25 = 89,280.23/x
  3. Step 3: Cross multiply
    157,272.23x = 217,028.25 × 89,280.23
  4. Step 4: Simplify right side
    157,272.23x = 19,376,330,991.36
  5. Step 5: Solve for x
    x = 19,376,330,991.36/157,272.23
  6. Step 6: Final answer
    x = 123,202.50

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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.