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Finding the Fourth Proportional to 131,302.80, 197,002.80 and 42,559.20

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Solution

The fourth proportional to 131,302.80, 197,002.80 and 42,559.20 is: 63,854.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,302.80 : 197,002.80 = 42,559.20 : x
  2. Step 2: Convert to fraction form
    131,302.80/197,002.80 = 42,559.20/x
  3. Step 3: Cross multiply
    131,302.80x = 197,002.80 × 42,559.20
  4. Step 4: Simplify right side
    131,302.80x = 8,384,281,565.76
  5. Step 5: Solve for x
    x = 8,384,281,565.76/131,302.80
  6. Step 6: Final answer
    x = 63,854.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.