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Finding the Fourth Proportional to 225,981.86, 311,854.05 and 124,009.02

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Solution

The fourth proportional to 225,981.86, 311,854.05 and 124,009.02 is: 171,131.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,981.86 : 311,854.05 = 124,009.02 : x
  2. Step 2: Convert to fraction form
    225,981.86/311,854.05 = 124,009.02/x
  3. Step 3: Cross multiply
    225,981.86x = 311,854.05 × 124,009.02
  4. Step 4: Simplify right side
    225,981.86x = 38,672,715,123.53
  5. Step 5: Solve for x
    x = 38,672,715,123.53/225,981.86
  6. Step 6: Final answer
    x = 171,131.95

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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.