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Finding the Fourth Proportional to 127,662.68, 176,167.50 and 70,290.80

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Solution

The fourth proportional to 127,662.68, 176,167.50 and 70,290.80 is: 96,997.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,662.68 : 176,167.50 = 70,290.80 : x
  2. Step 2: Convert to fraction form
    127,662.68/176,167.50 = 70,290.80/x
  3. Step 3: Cross multiply
    127,662.68x = 176,167.50 × 70,290.80
  4. Step 4: Simplify right side
    127,662.68x = 12,382,954,509
  5. Step 5: Solve for x
    x = 12,382,954,509/127,662.68
  6. Step 6: Final answer
    x = 96,997.45

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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.