Home / 92,087.20-138,001.20-68,208.40

Finding the Fourth Proportional to 92,087.20, 138,001.20 and 68,208.40

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Solution

The fourth proportional to 92,087.20, 138,001.20 and 68,208.40 is: 102,216.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,087.20 : 138,001.20 = 68,208.40 : x
  2. Step 2: Convert to fraction form
    92,087.20/138,001.20 = 68,208.40/x
  3. Step 3: Cross multiply
    92,087.20x = 138,001.20 × 68,208.40
  4. Step 4: Simplify right side
    92,087.20x = 9,412,841,050.08
  5. Step 5: Solve for x
    x = 9,412,841,050.08/92,087.20
  6. Step 6: Final answer
    x = 102,216.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.