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Finding the Fourth Proportional to 99,253.86, 136,967.92 and 55,643.52

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Solution

The fourth proportional to 99,253.86, 136,967.92 and 55,643.52 is: 76,786.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,253.86 : 136,967.92 = 55,643.52 : x
  2. Step 2: Convert to fraction form
    99,253.86/136,967.92 = 55,643.52/x
  3. Step 3: Cross multiply
    99,253.86x = 136,967.92 × 55,643.52
  4. Step 4: Simplify right side
    99,253.86x = 7,621,376,799.95
  5. Step 5: Solve for x
    x = 7,621,376,799.95/99,253.86
  6. Step 6: Final answer
    x = 76,786.71

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1.5x scale

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.