Home / 155,280.29-214,294.40-87,318.66

Finding the Fourth Proportional to 155,280.29, 214,294.40 and 87,318.66

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Solution

The fourth proportional to 155,280.29, 214,294.40 and 87,318.66 is: 120,504.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,280.29 : 214,294.40 = 87,318.66 : x
  2. Step 2: Convert to fraction form
    155,280.29/214,294.40 = 87,318.66/x
  3. Step 3: Cross multiply
    155,280.29x = 214,294.40 × 87,318.66
  4. Step 4: Simplify right side
    155,280.29x = 18,711,899,853.50
  5. Step 5: Solve for x
    x = 18,711,899,853.50/155,280.29
  6. Step 6: Final answer
    x = 120,504.02

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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.