Home / 142,702.20-213,794.10-87,233.40

Finding the Fourth Proportional to 142,702.20, 213,794.10 and 87,233.40

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Solution

The fourth proportional to 142,702.20, 213,794.10 and 87,233.40 is: 130,691.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,702.20 : 213,794.10 = 87,233.40 : x
  2. Step 2: Convert to fraction form
    142,702.20/213,794.10 = 87,233.40/x
  3. Step 3: Cross multiply
    142,702.20x = 213,794.10 × 87,233.40
  4. Step 4: Simplify right side
    142,702.20x = 18,649,986,242.94
  5. Step 5: Solve for x
    x = 18,649,986,242.94/142,702.20
  6. Step 6: Final answer
    x = 130,691.65

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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.