Home / 84,280.91-126,532.53-77,318.04

Finding the Fourth Proportional to 84,280.91, 126,532.53 and 77,318.04

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Solution

The fourth proportional to 84,280.91, 126,532.53 and 77,318.04 is: 116,079.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,280.91 : 126,532.53 = 77,318.04 : x
  2. Step 2: Convert to fraction form
    84,280.91/126,532.53 = 77,318.04/x
  3. Step 3: Cross multiply
    84,280.91x = 126,532.53 × 77,318.04
  4. Step 4: Simplify right side
    84,280.91x = 9,783,247,690.34
  5. Step 5: Solve for x
    x = 9,783,247,690.34/84,280.91
  6. Step 6: Final answer
    x = 116,079.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.