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Finding the Fourth Proportional to 130,374.99, 179,920.04 and 85,081.95

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Solution

The fourth proportional to 130,374.99, 179,920.04 and 85,081.95 is: 117,414.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,374.99 : 179,920.04 = 85,081.95 : x
  2. Step 2: Convert to fraction form
    130,374.99/179,920.04 = 85,081.95/x
  3. Step 3: Cross multiply
    130,374.99x = 179,920.04 × 85,081.95
  4. Step 4: Simplify right side
    130,374.99x = 15,307,947,847.28
  5. Step 5: Solve for x
    x = 15,307,947,847.28/130,374.99
  6. Step 6: Final answer
    x = 117,414.76

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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.