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Finding the Fourth Proportional to 99,112.80, 136,773.30 and 53,788.84

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Solution

The fourth proportional to 99,112.80, 136,773.30 and 53,788.84 is: 74,227.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,112.80 : 136,773.30 = 53,788.84 : x
  2. Step 2: Convert to fraction form
    99,112.80/136,773.30 = 53,788.84/x
  3. Step 3: Cross multiply
    99,112.80x = 136,773.30 × 53,788.84
  4. Step 4: Simplify right side
    99,112.80x = 7,356,877,149.97
  5. Step 5: Solve for x
    x = 7,356,877,149.97/99,112.80
  6. Step 6: Final answer
    x = 74,227.32

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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.