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Finding the Fourth Proportional to 159,419.10, 220,008.31 and 87,799.10

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Solution

The fourth proportional to 159,419.10, 220,008.31 and 87,799.10 is: 121,168.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,419.10 : 220,008.31 = 87,799.10 : x
  2. Step 2: Convert to fraction form
    159,419.10/220,008.31 = 87,799.10/x
  3. Step 3: Cross multiply
    159,419.10x = 220,008.31 × 87,799.10
  4. Step 4: Simplify right side
    159,419.10x = 19,316,531,721.55
  5. Step 5: Solve for x
    x = 19,316,531,721.55/159,419.10
  6. Step 6: Final answer
    x = 121,168.24

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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.