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Finding the Fourth Proportional to 157,637.29, 217,539.14 and 88,721.20

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Solution

The fourth proportional to 157,637.29, 217,539.14 and 88,721.20 is: 122,435.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,637.29 : 217,539.14 = 88,721.20 : x
  2. Step 2: Convert to fraction form
    157,637.29/217,539.14 = 88,721.20/x
  3. Step 3: Cross multiply
    157,637.29x = 217,539.14 × 88,721.20
  4. Step 4: Simplify right side
    157,637.29x = 19,300,333,512.84
  5. Step 5: Solve for x
    x = 19,300,333,512.84/157,637.29
  6. Step 6: Final answer
    x = 122,435.08

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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.