Home / 142,101.23-196,098.17-78,437.66

Finding the Fourth Proportional to 142,101.23, 196,098.17 and 78,437.66

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Solution

The fourth proportional to 142,101.23, 196,098.17 and 78,437.66 is: 108,243.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,101.23 : 196,098.17 = 78,437.66 : x
  2. Step 2: Convert to fraction form
    142,101.23/196,098.17 = 78,437.66/x
  3. Step 3: Cross multiply
    142,101.23x = 196,098.17 × 78,437.66
  4. Step 4: Simplify right side
    142,101.23x = 15,381,480,212.40
  5. Step 5: Solve for x
    x = 15,381,480,212.40/142,101.23
  6. Step 6: Final answer
    x = 108,243.12

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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.