Home / 127,087.56-175,378.10-78,676.60

Finding the Fourth Proportional to 127,087.56, 175,378.10 and 78,676.60

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Solution

The fourth proportional to 127,087.56, 175,378.10 and 78,676.60 is: 108,572.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,087.56 : 175,378.10 = 78,676.60 : x
  2. Step 2: Convert to fraction form
    127,087.56/175,378.10 = 78,676.60/x
  3. Step 3: Cross multiply
    127,087.56x = 175,378.10 × 78,676.60
  4. Step 4: Simplify right side
    127,087.56x = 13,798,152,622.46
  5. Step 5: Solve for x
    x = 13,798,152,622.46/127,087.56
  6. Step 6: Final answer
    x = 108,572.02

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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.