Home / 127,006.38-175,305.06-78,621.84

Finding the Fourth Proportional to 127,006.38, 175,305.06 and 78,621.84

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Solution

The fourth proportional to 127,006.38, 175,305.06 and 78,621.84 is: 108,520.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,006.38 : 175,305.06 = 78,621.84 : x
  2. Step 2: Convert to fraction form
    127,006.38/175,305.06 = 78,621.84/x
  3. Step 3: Cross multiply
    127,006.38x = 175,305.06 × 78,621.84
  4. Step 4: Simplify right side
    127,006.38x = 13,782,806,378.51
  5. Step 5: Solve for x
    x = 13,782,806,378.51/127,006.38
  6. Step 6: Final answer
    x = 108,520.58

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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.