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Finding the Fourth Proportional to 99,321.59, 137,065.29 and 53,999.48

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Solution

The fourth proportional to 99,321.59, 137,065.29 and 53,999.48 is: 74,520.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,321.59 : 137,065.29 = 53,999.48 : x
  2. Step 2: Convert to fraction form
    99,321.59/137,065.29 = 53,999.48/x
  3. Step 3: Cross multiply
    99,321.59x = 137,065.29 × 53,999.48
  4. Step 4: Simplify right side
    99,321.59x = 7,401,454,386.05
  5. Step 5: Solve for x
    x = 7,401,454,386.05/99,321.59
  6. Step 6: Final answer
    x = 74,520.10

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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.