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Finding the Fourth Proportional to 127,959.84, 176,588.37 and 71,370

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Solution

The fourth proportional to 127,959.84, 176,588.37 and 71,370 is: 98,492.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,959.84 : 176,588.37 = 71,370 : x
  2. Step 2: Convert to fraction form
    127,959.84/176,588.37 = 71,370/x
  3. Step 3: Cross multiply
    127,959.84x = 176,588.37 × 71,370
  4. Step 4: Simplify right side
    127,959.84x = 12,603,111,966.90
  5. Step 5: Solve for x
    x = 12,603,111,966.90/127,959.84
  6. Step 6: Final answer
    x = 98,492.71

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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.