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Finding the Fourth Proportional to 127,538.58, 191,221.29 and 71,417.28

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Solution

The fourth proportional to 127,538.58, 191,221.29 and 71,417.28 is: 107,077.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,538.58 : 191,221.29 = 71,417.28 : x
  2. Step 2: Convert to fraction form
    127,538.58/191,221.29 = 71,417.28/x
  3. Step 3: Cross multiply
    127,538.58x = 191,221.29 × 71,417.28
  4. Step 4: Simplify right side
    127,538.58x = 13,656,504,409.89
  5. Step 5: Solve for x
    x = 13,656,504,409.89/127,538.58
  6. Step 6: Final answer
    x = 107,077.44

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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.