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Finding the Fourth Proportional to 127,797, 176,389.88 and 79,435.41

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Solution

The fourth proportional to 127,797, 176,389.88 and 79,435.41 is: 109,639.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,797 : 176,389.88 = 79,435.41 : x
  2. Step 2: Convert to fraction form
    127,797/176,389.88 = 79,435.41/x
  3. Step 3: Cross multiply
    127,797x = 176,389.88 × 79,435.41
  4. Step 4: Simplify right side
    127,797x = 14,011,602,437.65
  5. Step 5: Solve for x
    x = 14,011,602,437.65/127,797
  6. Step 6: Final answer
    x = 109,639.53

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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.