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Finding the Fourth Proportional to 137,967.80, 206,987.70 and 44,475.80

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Solution

The fourth proportional to 137,967.80, 206,987.70 and 44,475.80 is: 66,725.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,967.80 : 206,987.70 = 44,475.80 : x
  2. Step 2: Convert to fraction form
    137,967.80/206,987.70 = 44,475.80/x
  3. Step 3: Cross multiply
    137,967.80x = 206,987.70 × 44,475.80
  4. Step 4: Simplify right side
    137,967.80x = 9,205,943,547.66
  5. Step 5: Solve for x
    x = 9,205,943,547.66/137,967.80
  6. Step 6: Final answer
    x = 66,725.31

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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.