Home / 136,974.68-189,024.50-76,545.30

Finding the Fourth Proportional to 136,974.68, 189,024.50 and 76,545.30

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Solution

The fourth proportional to 136,974.68, 189,024.50 and 76,545.30 is: 105,632.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,974.68 : 189,024.50 = 76,545.30 : x
  2. Step 2: Convert to fraction form
    136,974.68/189,024.50 = 76,545.30/x
  3. Step 3: Cross multiply
    136,974.68x = 189,024.50 × 76,545.30
  4. Step 4: Simplify right side
    136,974.68x = 14,468,936,677.12
  5. Step 5: Solve for x
    x = 14,468,936,677.12/136,974.68
  6. Step 6: Final answer
    x = 105,632.20

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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.