Home / 121,151.10-181,834.65-71,168.70

Finding the Fourth Proportional to 121,151.10, 181,834.65 and 71,168.70

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Solution

The fourth proportional to 121,151.10, 181,834.65 and 71,168.70 is: 106,816.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,151.10 : 181,834.65 = 71,168.70 : x
  2. Step 2: Convert to fraction form
    121,151.10/181,834.65 = 71,168.70/x
  3. Step 3: Cross multiply
    121,151.10x = 181,834.65 × 71,168.70
  4. Step 4: Simplify right side
    121,151.10x = 12,940,935,655.46
  5. Step 5: Solve for x
    x = 12,940,935,655.46/121,151.10
  6. Step 6: Final answer
    x = 106,816.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.