Home / 142,046.23-196,034.86-81,637.95

Finding the Fourth Proportional to 142,046.23, 196,034.86 and 81,637.95

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Solution

The fourth proportional to 142,046.23, 196,034.86 and 81,637.95 is: 112,666.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,046.23 : 196,034.86 = 81,637.95 : x
  2. Step 2: Convert to fraction form
    142,046.23/196,034.86 = 81,637.95/x
  3. Step 3: Cross multiply
    142,046.23x = 196,034.86 × 81,637.95
  4. Step 4: Simplify right side
    142,046.23x = 16,003,884,098.94
  5. Step 5: Solve for x
    x = 16,003,884,098.94/142,046.23
  6. Step 6: Final answer
    x = 112,666.73

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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.