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Finding the Fourth Proportional to 98,689.86, 136,254.24 and 68,464.62

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Solution

The fourth proportional to 98,689.86, 136,254.24 and 68,464.62 is: 94,524.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,689.86 : 136,254.24 = 68,464.62 : x
  2. Step 2: Convert to fraction form
    98,689.86/136,254.24 = 68,464.62/x
  3. Step 3: Cross multiply
    98,689.86x = 136,254.24 × 68,464.62
  4. Step 4: Simplify right side
    98,689.86x = 9,328,594,764.99
  5. Step 5: Solve for x
    x = 9,328,594,764.99/98,689.86
  6. Step 6: Final answer
    x = 94,524.35

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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.