Home / 137,711.61-190,049.27-77,279.13

Finding the Fourth Proportional to 137,711.61, 190,049.27 and 77,279.13

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Solution

The fourth proportional to 137,711.61, 190,049.27 and 77,279.13 is: 106,649.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,711.61 : 190,049.27 = 77,279.13 : x
  2. Step 2: Convert to fraction form
    137,711.61/190,049.27 = 77,279.13/x
  3. Step 3: Cross multiply
    137,711.61x = 190,049.27 × 77,279.13
  4. Step 4: Simplify right side
    137,711.61x = 14,686,842,242.74
  5. Step 5: Solve for x
    x = 14,686,842,242.74/137,711.61
  6. Step 6: Final answer
    x = 106,649.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.