Home / 127,340.19-175,730.50-79,621.20

Finding the Fourth Proportional to 127,340.19, 175,730.50 and 79,621.20

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Solution

The fourth proportional to 127,340.19, 175,730.50 and 79,621.20 is: 109,877.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,340.19 : 175,730.50 = 79,621.20 : x
  2. Step 2: Convert to fraction form
    127,340.19/175,730.50 = 79,621.20/x
  3. Step 3: Cross multiply
    127,340.19x = 175,730.50 × 79,621.20
  4. Step 4: Simplify right side
    127,340.19x = 13,991,872,208.89
  5. Step 5: Solve for x
    x = 13,991,872,208.89/127,340.19
  6. Step 6: Final answer
    x = 109,877.90

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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.