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Finding the Fourth Proportional to 98,662, 136,153.56 and 53,950

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Solution

The fourth proportional to 98,662, 136,153.56 and 53,950 is: 74,451

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,662 : 136,153.56 = 53,950 : x
  2. Step 2: Convert to fraction form
    98,662/136,153.56 = 53,950/x
  3. Step 3: Cross multiply
    98,662x = 136,153.56 × 53,950
  4. Step 4: Simplify right side
    98,662x = 7,345,484,562
  5. Step 5: Solve for x
    x = 7,345,484,562/98,662
  6. Step 6: Final answer
    x = 74,451

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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.