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Finding the Fourth Proportional to 99,937.32, 138,026.88 and 68,050.86

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Solution

The fourth proportional to 99,937.32, 138,026.88 and 68,050.86 is: 93,987.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,937.32 : 138,026.88 = 68,050.86 : x
  2. Step 2: Convert to fraction form
    99,937.32/138,026.88 = 68,050.86/x
  3. Step 3: Cross multiply
    99,937.32x = 138,026.88 × 68,050.86
  4. Step 4: Simplify right side
    99,937.32x = 9,392,847,887.12
  5. Step 5: Solve for x
    x = 9,392,847,887.12/99,937.32
  6. Step 6: Final answer
    x = 93,987.39

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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.