Home / 155,677.38-214,822.02-87,672.61

Finding the Fourth Proportional to 155,677.38, 214,822.02 and 87,672.61

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Solution

The fourth proportional to 155,677.38, 214,822.02 and 87,672.61 is: 120,981.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,677.38 : 214,822.02 = 87,672.61 : x
  2. Step 2: Convert to fraction form
    155,677.38/214,822.02 = 87,672.61/x
  3. Step 3: Cross multiply
    155,677.38x = 214,822.02 × 87,672.61
  4. Step 4: Simplify right side
    155,677.38x = 18,834,007,178.87
  5. Step 5: Solve for x
    x = 18,834,007,178.87/155,677.38
  6. Step 6: Final answer
    x = 120,981.01

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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.