Home / 100,631.76-138,870.36-58,194.24

Finding the Fourth Proportional to 100,631.76, 138,870.36 and 58,194.24

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Solution

The fourth proportional to 100,631.76, 138,870.36 and 58,194.24 is: 80,307.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,631.76 : 138,870.36 = 58,194.24 : x
  2. Step 2: Convert to fraction form
    100,631.76/138,870.36 = 58,194.24/x
  3. Step 3: Cross multiply
    100,631.76x = 138,870.36 × 58,194.24
  4. Step 4: Simplify right side
    100,631.76x = 8,081,455,058.73
  5. Step 5: Solve for x
    x = 8,081,455,058.73/100,631.76
  6. Step 6: Final answer
    x = 80,307.20

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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.