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Finding the Fourth Proportional to 127,353.40, 175,748.54 and 79,634.68

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Solution

The fourth proportional to 127,353.40, 175,748.54 and 79,634.68 is: 109,896.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,353.40 : 175,748.54 = 79,634.68 : x
  2. Step 2: Convert to fraction form
    127,353.40/175,748.54 = 79,634.68/x
  3. Step 3: Cross multiply
    127,353.40x = 175,748.54 × 79,634.68
  4. Step 4: Simplify right side
    127,353.40x = 13,995,678,743.37
  5. Step 5: Solve for x
    x = 13,995,678,743.37/127,353.40
  6. Step 6: Final answer
    x = 109,896.39

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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.