Home / 142,031.12-212,972.52-42,177.56

Finding the Fourth Proportional to 142,031.12, 212,972.52 and 42,177.56

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Solution

The fourth proportional to 142,031.12, 212,972.52 and 42,177.56 is: 63,244.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,031.12 : 212,972.52 = 42,177.56 : x
  2. Step 2: Convert to fraction form
    142,031.12/212,972.52 = 42,177.56/x
  3. Step 3: Cross multiply
    142,031.12x = 212,972.52 × 42,177.56
  4. Step 4: Simplify right side
    142,031.12x = 8,982,661,240.65
  5. Step 5: Solve for x
    x = 8,982,661,240.65/142,031.12
  6. Step 6: Final answer
    x = 63,244.32

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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.