Home / 127,561.60-191,488.20-75,000.70

Finding the Fourth Proportional to 127,561.60, 191,488.20 and 75,000.70

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Solution

The fourth proportional to 127,561.60, 191,488.20 and 75,000.70 is: 112,586.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,561.60 : 191,488.20 = 75,000.70 : x
  2. Step 2: Convert to fraction form
    127,561.60/191,488.20 = 75,000.70/x
  3. Step 3: Cross multiply
    127,561.60x = 191,488.20 × 75,000.70
  4. Step 4: Simplify right side
    127,561.60x = 14,361,749,041.74
  5. Step 5: Solve for x
    x = 14,361,749,041.74/127,561.60
  6. Step 6: Final answer
    x = 112,586.77

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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.