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Finding the Fourth Proportional to 137,376.80, 205,627.80 and 98,010.80

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Solution

The fourth proportional to 137,376.80, 205,627.80 and 98,010.80 is: 146,704.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,376.80 : 205,627.80 = 98,010.80 : x
  2. Step 2: Convert to fraction form
    137,376.80/205,627.80 = 98,010.80/x
  3. Step 3: Cross multiply
    137,376.80x = 205,627.80 × 98,010.80
  4. Step 4: Simplify right side
    137,376.80x = 20,153,745,180.24
  5. Step 5: Solve for x
    x = 20,153,745,180.24/137,376.80
  6. Step 6: Final answer
    x = 146,704.14

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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.