Home / 137,805.28-190,123.68-77,367.52

Finding the Fourth Proportional to 137,805.28, 190,123.68 and 77,367.52

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Solution

The fourth proportional to 137,805.28, 190,123.68 and 77,367.52 is: 106,740.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,805.28 : 190,123.68 = 77,367.52 : x
  2. Step 2: Convert to fraction form
    137,805.28/190,123.68 = 77,367.52/x
  3. Step 3: Cross multiply
    137,805.28x = 190,123.68 × 77,367.52
  4. Step 4: Simplify right side
    137,805.28x = 14,709,397,614.87
  5. Step 5: Solve for x
    x = 14,709,397,614.87/137,805.28
  6. Step 6: Final answer
    x = 106,740.45

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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.