Home / 129,757.11-179,070.01-72,401.44

Finding the Fourth Proportional to 129,757.11, 179,070.01 and 72,401.44

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Solution

The fourth proportional to 129,757.11, 179,070.01 and 72,401.44 is: 99,916.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,757.11 : 179,070.01 = 72,401.44 : x
  2. Step 2: Convert to fraction form
    129,757.11/179,070.01 = 72,401.44/x
  3. Step 3: Cross multiply
    129,757.11x = 179,070.01 × 72,401.44
  4. Step 4: Simplify right side
    129,757.11x = 12,964,925,689.46
  5. Step 5: Solve for x
    x = 12,964,925,689.46/129,757.11
  6. Step 6: Final answer
    x = 99,916.88

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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.