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Finding the Fourth Proportional to 141,888.71, 212,895.80 and 74,404.62

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Solution

The fourth proportional to 141,888.71, 212,895.80 and 74,404.62 is: 111,639.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,888.71 : 212,895.80 = 74,404.62 : x
  2. Step 2: Convert to fraction form
    141,888.71/212,895.80 = 74,404.62/x
  3. Step 3: Cross multiply
    141,888.71x = 212,895.80 × 74,404.62
  4. Step 4: Simplify right side
    141,888.71x = 15,840,431,098.60
  5. Step 5: Solve for x
    x = 15,840,431,098.60/141,888.71
  6. Step 6: Final answer
    x = 111,639.83

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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.