Home / 142,276.29-196,326.55-78,605.43

Finding the Fourth Proportional to 142,276.29, 196,326.55 and 78,605.43

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Solution

The fourth proportional to 142,276.29, 196,326.55 and 78,605.43 is: 108,467.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,276.29 : 196,326.55 = 78,605.43 : x
  2. Step 2: Convert to fraction form
    142,276.29/196,326.55 = 78,605.43/x
  3. Step 3: Cross multiply
    142,276.29x = 196,326.55 × 78,605.43
  4. Step 4: Simplify right side
    142,276.29x = 15,432,332,883.17
  5. Step 5: Solve for x
    x = 15,432,332,883.17/142,276.29
  6. Step 6: Final answer
    x = 108,467.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.