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Finding the Fourth Proportional to 127,672, 176,188.58 and 71,084.59

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Solution

The fourth proportional to 127,672, 176,188.58 and 71,084.59 is: 98,097.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,672 : 176,188.58 = 71,084.59 : x
  2. Step 2: Convert to fraction form
    127,672/176,188.58 = 71,084.59/x
  3. Step 3: Cross multiply
    127,672x = 176,188.58 × 71,084.59
  4. Step 4: Simplify right side
    127,672x = 12,524,292,616.56
  5. Step 5: Solve for x
    x = 12,524,292,616.56/127,672
  6. Step 6: Final answer
    x = 98,097.41

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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.