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Finding the Fourth Proportional to 127,959.80, 176,585.13 and 70,599.78

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Solution

The fourth proportional to 127,959.80, 176,585.13 and 70,599.78 is: 97,428.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,959.80 : 176,585.13 = 70,599.78 : x
  2. Step 2: Convert to fraction form
    127,959.80/176,585.13 = 70,599.78/x
  3. Step 3: Cross multiply
    127,959.80x = 176,585.13 × 70,599.78
  4. Step 4: Simplify right side
    127,959.80x = 12,466,871,329.27
  5. Step 5: Solve for x
    x = 12,466,871,329.27/127,959.80
  6. Step 6: Final answer
    x = 97,428.03

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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.