Home / 138,695.27-191,397.60-77,442.41

Finding the Fourth Proportional to 138,695.27, 191,397.60 and 77,442.41

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Solution

The fourth proportional to 138,695.27, 191,397.60 and 77,442.41 is: 106,869.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,695.27 : 191,397.60 = 77,442.41 : x
  2. Step 2: Convert to fraction form
    138,695.27/191,397.60 = 77,442.41/x
  3. Step 3: Cross multiply
    138,695.27x = 191,397.60 × 77,442.41
  4. Step 4: Simplify right side
    138,695.27x = 14,822,291,412.22
  5. Step 5: Solve for x
    x = 14,822,291,412.22/138,695.27
  6. Step 6: Final answer
    x = 106,869.48

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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.