Home / 145,120.39-217,672.90-45,269.15

Finding the Fourth Proportional to 145,120.39, 217,672.90 and 45,269.15

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Solution

The fourth proportional to 145,120.39, 217,672.90 and 45,269.15 is: 67,901.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,120.39 : 217,672.90 = 45,269.15 : x
  2. Step 2: Convert to fraction form
    145,120.39/217,672.90 = 45,269.15/x
  3. Step 3: Cross multiply
    145,120.39x = 217,672.90 × 45,269.15
  4. Step 4: Simplify right side
    145,120.39x = 9,853,866,214.14
  5. Step 5: Solve for x
    x = 9,853,866,214.14/145,120.39
  6. Step 6: Final answer
    x = 67,901.32

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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.