Home / 127,382.13-175,816.31-78,994.76

Finding the Fourth Proportional to 127,382.13, 175,816.31 and 78,994.76

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Solution

The fourth proportional to 127,382.13, 175,816.31 and 78,994.76 is: 109,030.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,382.13 : 175,816.31 = 78,994.76 : x
  2. Step 2: Convert to fraction form
    127,382.13/175,816.31 = 78,994.76/x
  3. Step 3: Cross multiply
    127,382.13x = 175,816.31 × 78,994.76
  4. Step 4: Simplify right side
    127,382.13x = 13,888,565,938.48
  5. Step 5: Solve for x
    x = 13,888,565,938.48/127,382.13
  6. Step 6: Final answer
    x = 109,030.72

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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.