Home / 133,063.40-199,364.70-86,292.20

Finding the Fourth Proportional to 133,063.40, 199,364.70 and 86,292.20

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Solution

The fourth proportional to 133,063.40, 199,364.70 and 86,292.20 is: 129,288.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,063.40 : 199,364.70 = 86,292.20 : x
  2. Step 2: Convert to fraction form
    133,063.40/199,364.70 = 86,292.20/x
  3. Step 3: Cross multiply
    133,063.40x = 199,364.70 × 86,292.20
  4. Step 4: Simplify right side
    133,063.40x = 17,203,618,565.34
  5. Step 5: Solve for x
    x = 17,203,618,565.34/133,063.40
  6. Step 6: Final answer
    x = 129,288.88

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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.