Home / 155,269.24-214,244.85-87,276.78

Finding the Fourth Proportional to 155,269.24, 214,244.85 and 87,276.78

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Solution

The fourth proportional to 155,269.24, 214,244.85 and 87,276.78 is: 120,426.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,269.24 : 214,244.85 = 87,276.78 : x
  2. Step 2: Convert to fraction form
    155,269.24/214,244.85 = 87,276.78/x
  3. Step 3: Cross multiply
    155,269.24x = 214,244.85 × 87,276.78
  4. Step 4: Simplify right side
    155,269.24x = 18,698,600,966.87
  5. Step 5: Solve for x
    x = 18,698,600,966.87/155,269.24
  6. Step 6: Final answer
    x = 120,426.95

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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.