Home / 99,021.54-136,658.36-54,318.18

Finding the Fourth Proportional to 99,021.54, 136,658.36 and 54,318.18

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Solution

The fourth proportional to 99,021.54, 136,658.36 and 54,318.18 is: 74,963.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,021.54 : 136,658.36 = 54,318.18 : x
  2. Step 2: Convert to fraction form
    99,021.54/136,658.36 = 54,318.18/x
  3. Step 3: Cross multiply
    99,021.54x = 136,658.36 × 54,318.18
  4. Step 4: Simplify right side
    99,021.54x = 7,423,033,396.98
  5. Step 5: Solve for x
    x = 7,423,033,396.98/99,021.54
  6. Step 6: Final answer
    x = 74,963.83

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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.