Home / 142,117.56-213,187.68-82,959.21

Finding the Fourth Proportional to 142,117.56, 213,187.68 and 82,959.21

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Solution

The fourth proportional to 142,117.56, 213,187.68 and 82,959.21 is: 124,445.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,117.56 : 213,187.68 = 82,959.21 : x
  2. Step 2: Convert to fraction form
    142,117.56/213,187.68 = 82,959.21/x
  3. Step 3: Cross multiply
    142,117.56x = 213,187.68 × 82,959.21
  4. Step 4: Simplify right side
    142,117.56x = 17,685,881,514.53
  5. Step 5: Solve for x
    x = 17,685,881,514.53/142,117.56
  6. Step 6: Final answer
    x = 124,445.43

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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.