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Finding the Fourth Proportional to 133,358.80, 200,038.20 and 80,870.80

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Solution

The fourth proportional to 133,358.80, 200,038.20 and 80,870.80 is: 121,306.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,358.80 : 200,038.20 = 80,870.80 : x
  2. Step 2: Convert to fraction form
    133,358.80/200,038.20 = 80,870.80/x
  3. Step 3: Cross multiply
    133,358.80x = 200,038.20 × 80,870.80
  4. Step 4: Simplify right side
    133,358.80x = 16,177,249,264.56
  5. Step 5: Solve for x
    x = 16,177,249,264.56/133,358.80
  6. Step 6: Final answer
    x = 121,306.20

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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.