Home / 129,737.53-179,043.11-81,973.45

Finding the Fourth Proportional to 129,737.53, 179,043.11 and 81,973.45

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Solution

The fourth proportional to 129,737.53, 179,043.11 and 81,973.45 is: 113,126.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,737.53 : 179,043.11 = 81,973.45 : x
  2. Step 2: Convert to fraction form
    129,737.53/179,043.11 = 81,973.45/x
  3. Step 3: Cross multiply
    129,737.53x = 179,043.11 × 81,973.45
  4. Step 4: Simplify right side
    129,737.53x = 14,676,781,425.43
  5. Step 5: Solve for x
    x = 14,676,781,425.43/129,737.53
  6. Step 6: Final answer
    x = 113,126.72

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1.5x scale

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.