Home / 127,269.60-175,551.36-78,189.72

Finding the Fourth Proportional to 127,269.60, 175,551.36 and 78,189.72

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Solution

The fourth proportional to 127,269.60, 175,551.36 and 78,189.72 is: 107,852.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,269.60 : 175,551.36 = 78,189.72 : x
  2. Step 2: Convert to fraction form
    127,269.60/175,551.36 = 78,189.72/x
  3. Step 3: Cross multiply
    127,269.60x = 175,551.36 × 78,189.72
  4. Step 4: Simplify right side
    127,269.60x = 13,726,311,684.02
  5. Step 5: Solve for x
    x = 13,726,311,684.02/127,269.60
  6. Step 6: Final answer
    x = 107,852.24

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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.