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Finding the Fourth Proportional to 159,483.28, 220,079.04 and 87,861.40

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Solution

The fourth proportional to 159,483.28, 220,079.04 and 87,861.40 is: 121,244.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,483.28 : 220,079.04 = 87,861.40 : x
  2. Step 2: Convert to fraction form
    159,483.28/220,079.04 = 87,861.40/x
  3. Step 3: Cross multiply
    159,483.28x = 220,079.04 × 87,861.40
  4. Step 4: Simplify right side
    159,483.28x = 19,336,452,565.06
  5. Step 5: Solve for x
    x = 19,336,452,565.06/159,483.28
  6. Step 6: Final answer
    x = 121,244.39

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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.