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Finding the Fourth Proportional to 159,164.17, 219,646.66 and 87,549.64

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Solution

The fourth proportional to 159,164.17, 219,646.66 and 87,549.64 is: 120,818.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,164.17 : 219,646.66 = 87,549.64 : x
  2. Step 2: Convert to fraction form
    159,164.17/219,646.66 = 87,549.64/x
  3. Step 3: Cross multiply
    159,164.17x = 219,646.66 × 87,549.64
  4. Step 4: Simplify right side
    159,164.17x = 19,229,984,911.97
  5. Step 5: Solve for x
    x = 19,229,984,911.97/159,164.17
  6. Step 6: Final answer
    x = 120,818.56

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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.