Home / 138,726.57-191,442.78-96,309.71

Finding the Fourth Proportional to 138,726.57, 191,442.78 and 96,309.71

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Solution

The fourth proportional to 138,726.57, 191,442.78 and 96,309.71 is: 132,907.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,726.57 : 191,442.78 = 96,309.71 : x
  2. Step 2: Convert to fraction form
    138,726.57/191,442.78 = 96,309.71/x
  3. Step 3: Cross multiply
    138,726.57x = 191,442.78 × 96,309.71
  4. Step 4: Simplify right side
    138,726.57x = 18,437,797,184.63
  5. Step 5: Solve for x
    x = 18,437,797,184.63/138,726.57
  6. Step 6: Final answer
    x = 132,907.47

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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.