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Finding the Fourth Proportional to 127,291.20, 177,974.40 and 127,291.20

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Solution

The fourth proportional to 127,291.20, 177,974.40 and 127,291.20 is: 177,974.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,291.20 : 177,974.40 = 127,291.20 : x
  2. Step 2: Convert to fraction form
    127,291.20/177,974.40 = 127,291.20/x
  3. Step 3: Cross multiply
    127,291.20x = 177,974.40 × 127,291.20
  4. Step 4: Simplify right side
    127,291.20x = 22,654,574,945.28
  5. Step 5: Solve for x
    x = 22,654,574,945.28/127,291.20
  6. Step 6: Final answer
    x = 177,974.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.