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Finding the Fourth Proportional to 159,432.32, 220,018.08 and 87,814.88

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Solution

The fourth proportional to 159,432.32, 220,018.08 and 87,814.88 is: 121,185.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,432.32 : 220,018.08 = 87,814.88 : x
  2. Step 2: Convert to fraction form
    159,432.32/220,018.08 = 87,814.88/x
  3. Step 3: Cross multiply
    159,432.32x = 220,018.08 × 87,814.88
  4. Step 4: Simplify right side
    159,432.32x = 19,320,861,293.03
  5. Step 5: Solve for x
    x = 19,320,861,293.03/159,432.32
  6. Step 6: Final answer
    x = 121,185.35

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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.