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Finding the Fourth Proportional to 129,854.94, 179,095.95 and 89,559.42

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Solution

The fourth proportional to 129,854.94, 179,095.95 and 89,559.42 is: 123,520.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,854.94 : 179,095.95 = 89,559.42 : x
  2. Step 2: Convert to fraction form
    129,854.94/179,095.95 = 89,559.42/x
  3. Step 3: Cross multiply
    129,854.94x = 179,095.95 × 89,559.42
  4. Step 4: Simplify right side
    129,854.94x = 16,039,729,406.35
  5. Step 5: Solve for x
    x = 16,039,729,406.35/129,854.94
  6. Step 6: Final answer
    x = 123,520.36

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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.