Home / 145,304.60-217,550.88-78,505.38

Finding the Fourth Proportional to 145,304.60, 217,550.88 and 78,505.38

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Solution

The fourth proportional to 145,304.60, 217,550.88 and 78,505.38 is: 117,538.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,304.60 : 217,550.88 = 78,505.38 : x
  2. Step 2: Convert to fraction form
    145,304.60/217,550.88 = 78,505.38/x
  3. Step 3: Cross multiply
    145,304.60x = 217,550.88 × 78,505.38
  4. Step 4: Simplify right side
    145,304.60x = 17,078,914,503.73
  5. Step 5: Solve for x
    x = 17,078,914,503.73/145,304.60
  6. Step 6: Final answer
    x = 117,538.71

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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.