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Finding the Fourth Proportional to 99,320.97, 137,064.71 and 53,999.96

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Solution

The fourth proportional to 99,320.97, 137,064.71 and 53,999.96 is: 74,520.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,320.97 : 137,064.71 = 53,999.96 : x
  2. Step 2: Convert to fraction form
    99,320.97/137,064.71 = 53,999.96/x
  3. Step 3: Cross multiply
    99,320.97x = 137,064.71 × 53,999.96
  4. Step 4: Simplify right side
    99,320.97x = 7,401,487,902.09
  5. Step 5: Solve for x
    x = 7,401,487,902.09/99,320.97
  6. Step 6: Final answer
    x = 74,520.90

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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.