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Finding the Fourth Proportional to 119,211.80, 178,839.30 and 59,898.20

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Solution

The fourth proportional to 119,211.80, 178,839.30 and 59,898.20 is: 89,858.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,211.80 : 178,839.30 = 59,898.20 : x
  2. Step 2: Convert to fraction form
    119,211.80/178,839.30 = 59,898.20/x
  3. Step 3: Cross multiply
    119,211.80x = 178,839.30 × 59,898.20
  4. Step 4: Simplify right side
    119,211.80x = 10,712,152,159.26
  5. Step 5: Solve for x
    x = 10,712,152,159.26/119,211.80
  6. Step 6: Final answer
    x = 89,858.15

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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.