Home / 103,138.44-142,323.66-60,691.20

Finding the Fourth Proportional to 103,138.44, 142,323.66 and 60,691.20

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Solution

The fourth proportional to 103,138.44, 142,323.66 and 60,691.20 is: 83,749.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,138.44 : 142,323.66 = 60,691.20 : x
  2. Step 2: Convert to fraction form
    103,138.44/142,323.66 = 60,691.20/x
  3. Step 3: Cross multiply
    103,138.44x = 142,323.66 × 60,691.20
  4. Step 4: Simplify right side
    103,138.44x = 8,637,793,713.79
  5. Step 5: Solve for x
    x = 8,637,793,713.79/103,138.44
  6. Step 6: Final answer
    x = 83,749.51

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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.