Home / 131,042.40-196,515.60-42,319.20

Finding the Fourth Proportional to 131,042.40, 196,515.60 and 42,319.20

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Solution

The fourth proportional to 131,042.40, 196,515.60 and 42,319.20 is: 63,463.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,042.40 : 196,515.60 = 42,319.20 : x
  2. Step 2: Convert to fraction form
    131,042.40/196,515.60 = 42,319.20/x
  3. Step 3: Cross multiply
    131,042.40x = 196,515.60 × 42,319.20
  4. Step 4: Simplify right side
    131,042.40x = 8,316,382,979.52
  5. Step 5: Solve for x
    x = 8,316,382,979.52/131,042.40
  6. Step 6: Final answer
    x = 63,463.30

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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.