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Finding the Fourth Proportional to 127,685.98, 176,205 and 70,324.20

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Solution

The fourth proportional to 127,685.98, 176,205 and 70,324.20 is: 97,046.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,685.98 : 176,205 = 70,324.20 : x
  2. Step 2: Convert to fraction form
    127,685.98/176,205 = 70,324.20/x
  3. Step 3: Cross multiply
    127,685.98x = 176,205 × 70,324.20
  4. Step 4: Simplify right side
    127,685.98x = 12,391,475,661
  5. Step 5: Solve for x
    x = 12,391,475,661/127,685.98
  6. Step 6: Final answer
    x = 97,046.49

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1.5x scale

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.