Home / 99,231.86-136,940.14-53,909.46

Finding the Fourth Proportional to 99,231.86, 136,940.14 and 53,909.46

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Solution

The fourth proportional to 99,231.86, 136,940.14 and 53,909.46 is: 74,395.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,231.86 : 136,940.14 = 53,909.46 : x
  2. Step 2: Convert to fraction form
    99,231.86/136,940.14 = 53,909.46/x
  3. Step 3: Cross multiply
    99,231.86x = 136,940.14 × 53,909.46
  4. Step 4: Simplify right side
    99,231.86x = 7,382,368,999.72
  5. Step 5: Solve for x
    x = 7,382,368,999.72/99,231.86
  6. Step 6: Final answer
    x = 74,395.15

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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.