Home / 158,023.76-218,132.08-103,579.43

Finding the Fourth Proportional to 158,023.76, 218,132.08 and 103,579.43

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Solution

The fourth proportional to 158,023.76, 218,132.08 and 103,579.43 is: 142,978.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,023.76 : 218,132.08 = 103,579.43 : x
  2. Step 2: Convert to fraction form
    158,023.76/218,132.08 = 103,579.43/x
  3. Step 3: Cross multiply
    158,023.76x = 218,132.08 × 103,579.43
  4. Step 4: Simplify right side
    158,023.76x = 22,593,996,511.11
  5. Step 5: Solve for x
    x = 22,593,996,511.11/158,023.76
  6. Step 6: Final answer
    x = 142,978.48

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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.