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Finding the Fourth Proportional to 127,221.70, 177,877.10 and 127,221.70

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Solution

The fourth proportional to 127,221.70, 177,877.10 and 127,221.70 is: 177,877.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,221.70 : 177,877.10 = 127,221.70 : x
  2. Step 2: Convert to fraction form
    127,221.70/177,877.10 = 127,221.70/x
  3. Step 3: Cross multiply
    127,221.70x = 177,877.10 × 127,221.70
  4. Step 4: Simplify right side
    127,221.70x = 22,629,827,053.07
  5. Step 5: Solve for x
    x = 22,629,827,053.07/127,221.70
  6. Step 6: Final answer
    x = 177,877.10

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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.