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Finding the Fourth Proportional to 155,677.88, 214,822.71 and 87,673.11

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Solution

The fourth proportional to 155,677.88, 214,822.71 and 87,673.11 is: 120,981.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,677.88 : 214,822.71 = 87,673.11 : x
  2. Step 2: Convert to fraction form
    155,677.88/214,822.71 = 87,673.11/x
  3. Step 3: Cross multiply
    155,677.88x = 214,822.71 × 87,673.11
  4. Step 4: Simplify right side
    155,677.88x = 18,834,175,084.33
  5. Step 5: Solve for x
    x = 18,834,175,084.33/155,677.88
  6. Step 6: Final answer
    x = 120,981.71

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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.