Home / 138,085.76-207,172.16-49,337.28

Finding the Fourth Proportional to 138,085.76, 207,172.16 and 49,337.28

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Solution

The fourth proportional to 138,085.76, 207,172.16 and 49,337.28 is: 74,021.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,085.76 : 207,172.16 = 49,337.28 : x
  2. Step 2: Convert to fraction form
    138,085.76/207,172.16 = 49,337.28/x
  3. Step 3: Cross multiply
    138,085.76x = 207,172.16 × 49,337.28
  4. Step 4: Simplify right side
    138,085.76x = 10,221,310,866.12
  5. Step 5: Solve for x
    x = 10,221,310,866.12/138,085.76
  6. Step 6: Final answer
    x = 74,021.47

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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.