Home / 127,102.49-175,346.04-78,691.54

Finding the Fourth Proportional to 127,102.49, 175,346.04 and 78,691.54

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Solution

The fourth proportional to 127,102.49, 175,346.04 and 78,691.54 is: 108,560.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,102.49 : 175,346.04 = 78,691.54 : x
  2. Step 2: Convert to fraction form
    127,102.49/175,346.04 = 78,691.54/x
  3. Step 3: Cross multiply
    127,102.49x = 175,346.04 × 78,691.54
  4. Step 4: Simplify right side
    127,102.49x = 13,798,249,920.50
  5. Step 5: Solve for x
    x = 13,798,249,920.50/127,102.49
  6. Step 6: Final answer
    x = 108,560.03

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1.5x scale

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.