Home / 127,748.20-191,708.70-71,588.20

Finding the Fourth Proportional to 127,748.20, 191,708.70 and 71,588.20

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Solution

The fourth proportional to 127,748.20, 191,708.70 and 71,588.20 is: 107,430.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,748.20 : 191,708.70 = 71,588.20 : x
  2. Step 2: Convert to fraction form
    127,748.20/191,708.70 = 71,588.20/x
  3. Step 3: Cross multiply
    127,748.20x = 191,708.70 × 71,588.20
  4. Step 4: Simplify right side
    127,748.20x = 13,724,080,757.34
  5. Step 5: Solve for x
    x = 13,724,080,757.34/127,748.20
  6. Step 6: Final answer
    x = 107,430.72

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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.