Home / 99,231.49-136,940.16-53,909.86

Finding the Fourth Proportional to 99,231.49, 136,940.16 and 53,909.86

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Solution

The fourth proportional to 99,231.49, 136,940.16 and 53,909.86 is: 74,395.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,231.49 : 136,940.16 = 53,909.86 : x
  2. Step 2: Convert to fraction form
    99,231.49/136,940.16 = 53,909.86/x
  3. Step 3: Cross multiply
    99,231.49x = 136,940.16 × 53,909.86
  4. Step 4: Simplify right side
    99,231.49x = 7,382,424,853.98
  5. Step 5: Solve for x
    x = 7,382,424,853.98/99,231.49
  6. Step 6: Final answer
    x = 74,395.99

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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.