Home / 127,708.85-176,217.12-77,407.85

Finding the Fourth Proportional to 127,708.85, 176,217.12 and 77,407.85

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Solution

The fourth proportional to 127,708.85, 176,217.12 and 77,407.85 is: 106,810.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,708.85 : 176,217.12 = 77,407.85 : x
  2. Step 2: Convert to fraction form
    127,708.85/176,217.12 = 77,407.85/x
  3. Step 3: Cross multiply
    127,708.85x = 176,217.12 × 77,407.85
  4. Step 4: Simplify right side
    127,708.85x = 13,640,588,832.93
  5. Step 5: Solve for x
    x = 13,640,588,832.93/127,708.85
  6. Step 6: Final answer
    x = 106,810.05

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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.