Home / 137,899.10-206,661.80-71,385.93

Finding the Fourth Proportional to 137,899.10, 206,661.80 and 71,385.93

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Solution

The fourth proportional to 137,899.10, 206,661.80 and 71,385.93 is: 106,982.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,899.10 : 206,661.80 = 71,385.93 : x
  2. Step 2: Convert to fraction form
    137,899.10/206,661.80 = 71,385.93/x
  3. Step 3: Cross multiply
    137,899.10x = 206,661.80 × 71,385.93
  4. Step 4: Simplify right side
    137,899.10x = 14,752,743,398.24
  5. Step 5: Solve for x
    x = 14,752,743,398.24/137,899.10
  6. Step 6: Final answer
    x = 106,982.16

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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.