Home / 138,854.18-191,618.88-75,192.06

Finding the Fourth Proportional to 138,854.18, 191,618.88 and 75,192.06

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Solution

The fourth proportional to 138,854.18, 191,618.88 and 75,192.06 is: 103,765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,854.18 : 191,618.88 = 75,192.06 : x
  2. Step 2: Convert to fraction form
    138,854.18/191,618.88 = 75,192.06/x
  3. Step 3: Cross multiply
    138,854.18x = 191,618.88 × 75,192.06
  4. Step 4: Simplify right side
    138,854.18x = 14,408,218,322.09
  5. Step 5: Solve for x
    x = 14,408,218,322.09/138,854.18
  6. Step 6: Final answer
    x = 103,765.10

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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.