Home / 155,269.20-214,294.14-87,291.78

Finding the Fourth Proportional to 155,269.20, 214,294.14 and 87,291.78

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Solution

The fourth proportional to 155,269.20, 214,294.14 and 87,291.78 is: 120,475.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,269.20 : 214,294.14 = 87,291.78 : x
  2. Step 2: Convert to fraction form
    155,269.20/214,294.14 = 87,291.78/x
  3. Step 3: Cross multiply
    155,269.20x = 214,294.14 × 87,291.78
  4. Step 4: Simplify right side
    155,269.20x = 18,706,116,924.17
  5. Step 5: Solve for x
    x = 18,706,116,924.17/155,269.20
  6. Step 6: Final answer
    x = 120,475.39

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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.