Home / 82,640,347.20-123,960,520.80-73,712,138.40

Finding the Fourth Proportional to 82,640,347.20, 123,960,520.80 and 73,712,138.40

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Solution

The fourth proportional to 82,640,347.20, 123,960,520.80 and 73,712,138.40 is: 110,568,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,640,347.20 : 123,960,520.80 = 73,712,138.40 : x
  2. Step 2: Convert to fraction form
    82,640,347.20/123,960,520.80 = 73,712,138.40/x
  3. Step 3: Cross multiply
    82,640,347.20x = 123,960,520.80 × 73,712,138.40
  4. Step 4: Simplify right side
    82,640,347.20x = 9,137,395,065,345,680
  5. Step 5: Solve for x
    x = 9,137,395,065,345,680/82,640,347.20
  6. Step 6: Final answer
    x = 110,568,207.60

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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.