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Finding the Fourth Proportional to 99,877.48, 137,797.86 and 65,902.84

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Solution

The fourth proportional to 99,877.48, 137,797.86 and 65,902.84 is: 90,924.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,877.48 : 137,797.86 = 65,902.84 : x
  2. Step 2: Convert to fraction form
    99,877.48/137,797.86 = 65,902.84/x
  3. Step 3: Cross multiply
    99,877.48x = 137,797.86 × 65,902.84
  4. Step 4: Simplify right side
    99,877.48x = 9,081,270,319.92
  5. Step 5: Solve for x
    x = 9,081,270,319.92/99,877.48
  6. Step 6: Final answer
    x = 90,924.10

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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.