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Finding the Fourth Proportional to 137,460.80, 206,092.80 and 53,148.80

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Solution

The fourth proportional to 137,460.80, 206,092.80 and 53,148.80 is: 79,685.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,460.80 : 206,092.80 = 53,148.80 : x
  2. Step 2: Convert to fraction form
    137,460.80/206,092.80 = 53,148.80/x
  3. Step 3: Cross multiply
    137,460.80x = 206,092.80 × 53,148.80
  4. Step 4: Simplify right side
    137,460.80x = 10,953,585,008.64
  5. Step 5: Solve for x
    x = 10,953,585,008.64/137,460.80
  6. Step 6: Final answer
    x = 79,685.15

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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.