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Finding the Fourth Proportional to 127,798.64, 176,367.52 and 71,210

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Solution

The fourth proportional to 127,798.64, 176,367.52 and 71,210 is: 98,272.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,798.64 : 176,367.52 = 71,210 : x
  2. Step 2: Convert to fraction form
    127,798.64/176,367.52 = 71,210/x
  3. Step 3: Cross multiply
    127,798.64x = 176,367.52 × 71,210
  4. Step 4: Simplify right side
    127,798.64x = 12,559,131,099.20
  5. Step 5: Solve for x
    x = 12,559,131,099.20/127,798.64
  6. Step 6: Final answer
    x = 98,272.81

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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.