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Finding the Fourth Proportional to 127,043.78, 175,319.21 and 69,681.92

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Solution

The fourth proportional to 127,043.78, 175,319.21 and 69,681.92 is: 96,160.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,043.78 : 175,319.21 = 69,681.92 : x
  2. Step 2: Convert to fraction form
    127,043.78/175,319.21 = 69,681.92/x
  3. Step 3: Cross multiply
    127,043.78x = 175,319.21 × 69,681.92
  4. Step 4: Simplify right side
    127,043.78x = 12,216,577,940.68
  5. Step 5: Solve for x
    x = 12,216,577,940.68/127,043.78
  6. Step 6: Final answer
    x = 96,160.38

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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.