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Finding the Fourth Proportional to 127,797.50, 176,390.58 and 79,435.91

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Solution

The fourth proportional to 127,797.50, 176,390.58 and 79,435.91 is: 109,640.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,797.50 : 176,390.58 = 79,435.91 : x
  2. Step 2: Convert to fraction form
    127,797.50/176,390.58 = 79,435.91/x
  3. Step 3: Cross multiply
    127,797.50x = 176,390.58 × 79,435.91
  4. Step 4: Simplify right side
    127,797.50x = 14,011,746,237.73
  5. Step 5: Solve for x
    x = 14,011,746,237.73/127,797.50
  6. Step 6: Final answer
    x = 109,640.22

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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.