Home / 92,430.18-137,919.24-86,787.72

Finding the Fourth Proportional to 92,430.18, 137,919.24 and 86,787.72

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Solution

The fourth proportional to 92,430.18, 137,919.24 and 86,787.72 is: 129,499.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,430.18 : 137,919.24 = 86,787.72 : x
  2. Step 2: Convert to fraction form
    92,430.18/137,919.24 = 86,787.72/x
  3. Step 3: Cross multiply
    92,430.18x = 137,919.24 × 86,787.72
  4. Step 4: Simplify right side
    92,430.18x = 11,969,696,383.73
  5. Step 5: Solve for x
    x = 11,969,696,383.73/92,430.18
  6. Step 6: Final answer
    x = 129,499.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.