Home / 130,778.12-196,242.85-54,869.86

Finding the Fourth Proportional to 130,778.12, 196,242.85 and 54,869.86

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Solution

The fourth proportional to 130,778.12, 196,242.85 and 54,869.86 is: 82,336.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,778.12 : 196,242.85 = 54,869.86 : x
  2. Step 2: Convert to fraction form
    130,778.12/196,242.85 = 54,869.86/x
  3. Step 3: Cross multiply
    130,778.12x = 196,242.85 × 54,869.86
  4. Step 4: Simplify right side
    130,778.12x = 10,767,816,915.53
  5. Step 5: Solve for x
    x = 10,767,816,915.53/130,778.12
  6. Step 6: Final answer
    x = 82,336.53

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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.