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Finding the Fourth Proportional to 127,959.31, 176,583.40 and 71,370.64

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Solution

The fourth proportional to 127,959.31, 176,583.40 and 71,370.64 is: 98,491.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,959.31 : 176,583.40 = 71,370.64 : x
  2. Step 2: Convert to fraction form
    127,959.31/176,583.40 = 71,370.64/x
  3. Step 3: Cross multiply
    127,959.31x = 176,583.40 × 71,370.64
  4. Step 4: Simplify right side
    127,959.31x = 12,602,870,271.38
  5. Step 5: Solve for x
    x = 12,602,870,271.38/127,959.31
  6. Step 6: Final answer
    x = 98,491.23

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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.