Home / 109,139.40-150,630.44-68,875.11

Finding the Fourth Proportional to 109,139.40, 150,630.44 and 68,875.11

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Solution

The fourth proportional to 109,139.40, 150,630.44 and 68,875.11 is: 95,059.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,139.40 : 150,630.44 = 68,875.11 : x
  2. Step 2: Convert to fraction form
    109,139.40/150,630.44 = 68,875.11/x
  3. Step 3: Cross multiply
    109,139.40x = 150,630.44 × 68,875.11
  4. Step 4: Simplify right side
    109,139.40x = 10,374,687,779.97
  5. Step 5: Solve for x
    x = 10,374,687,779.97/109,139.40
  6. Step 6: Final answer
    x = 95,059.05

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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.