Home / 127,391.18-175,809.62-76,405.86

Finding the Fourth Proportional to 127,391.18, 175,809.62 and 76,405.86

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Solution

The fourth proportional to 127,391.18, 175,809.62 and 76,405.86 is: 105,445.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,391.18 : 175,809.62 = 76,405.86 : x
  2. Step 2: Convert to fraction form
    127,391.18/175,809.62 = 76,405.86/x
  3. Step 3: Cross multiply
    127,391.18x = 175,809.62 × 76,405.86
  4. Step 4: Simplify right side
    127,391.18x = 13,432,885,403.39
  5. Step 5: Solve for x
    x = 13,432,885,403.39/127,391.18
  6. Step 6: Final answer
    x = 105,445.97

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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.