Home / 99,261.86-136,981.26-53,939.73

Finding the Fourth Proportional to 99,261.86, 136,981.26 and 53,939.73

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Solution

The fourth proportional to 99,261.86, 136,981.26 and 53,939.73 is: 74,436.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,261.86 : 136,981.26 = 53,939.73 : x
  2. Step 2: Convert to fraction form
    99,261.86/136,981.26 = 53,939.73/x
  3. Step 3: Cross multiply
    99,261.86x = 136,981.26 × 53,939.73
  4. Step 4: Simplify right side
    99,261.86x = 7,388,732,179.46
  5. Step 5: Solve for x
    x = 7,388,732,179.46/99,261.86
  6. Step 6: Final answer
    x = 74,436.77

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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.