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Finding the Fourth Proportional to 127,522.65, 191,117.90 and 79,471.51

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Solution

The fourth proportional to 127,522.65, 191,117.90 and 79,471.51 is: 119,103.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,522.65 : 191,117.90 = 79,471.51 : x
  2. Step 2: Convert to fraction form
    127,522.65/191,117.90 = 79,471.51/x
  3. Step 3: Cross multiply
    127,522.65x = 191,117.90 × 79,471.51
  4. Step 4: Simplify right side
    127,522.65x = 15,188,427,703.67
  5. Step 5: Solve for x
    x = 15,188,427,703.67/127,522.65
  6. Step 6: Final answer
    x = 119,103.77

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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.