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Finding the Fourth Proportional to 200,040.80, 300,061.20 and 66,925.40

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Solution

The fourth proportional to 200,040.80, 300,061.20 and 66,925.40 is: 100,388.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,040.80 : 300,061.20 = 66,925.40 : x
  2. Step 2: Convert to fraction form
    200,040.80/300,061.20 = 66,925.40/x
  3. Step 3: Cross multiply
    200,040.80x = 300,061.20 × 66,925.40
  4. Step 4: Simplify right side
    200,040.80x = 20,081,715,834.48
  5. Step 5: Solve for x
    x = 20,081,715,834.48/200,040.80
  6. Step 6: Final answer
    x = 100,388.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.