Home / 127,108.80-190,530.12-42,839.76

Finding the Fourth Proportional to 127,108.80, 190,530.12 and 42,839.76

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Solution

The fourth proportional to 127,108.80, 190,530.12 and 42,839.76 is: 64,214.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,108.80 : 190,530.12 = 42,839.76 : x
  2. Step 2: Convert to fraction form
    127,108.80/190,530.12 = 42,839.76/x
  3. Step 3: Cross multiply
    127,108.80x = 190,530.12 × 42,839.76
  4. Step 4: Simplify right side
    127,108.80x = 8,162,264,613.57
  5. Step 5: Solve for x
    x = 8,162,264,613.57/127,108.80
  6. Step 6: Final answer
    x = 64,214.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.