Home / 158,023.82-218,132.17-103,579.49

Finding the Fourth Proportional to 158,023.82, 218,132.17 and 103,579.49

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Solution

The fourth proportional to 158,023.82, 218,132.17 and 103,579.49 is: 142,978.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,023.82 : 218,132.17 = 103,579.49 : x
  2. Step 2: Convert to fraction form
    158,023.82/218,132.17 = 103,579.49/x
  3. Step 3: Cross multiply
    158,023.82x = 218,132.17 × 103,579.49
  4. Step 4: Simplify right side
    158,023.82x = 22,594,019,207.58
  5. Step 5: Solve for x
    x = 22,594,019,207.58/158,023.82
  6. Step 6: Final answer
    x = 142,978.57

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1.5x scale

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.