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Finding the Fourth Proportional to 200,031.40, 300,003.90 and 87,711.40

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Solution

The fourth proportional to 200,031.40, 300,003.90 and 87,711.40 is: 131,548.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,031.40 : 300,003.90 = 87,711.40 : x
  2. Step 2: Convert to fraction form
    200,031.40/300,003.90 = 87,711.40/x
  3. Step 3: Cross multiply
    200,031.40x = 300,003.90 × 87,711.40
  4. Step 4: Simplify right side
    200,031.40x = 26,313,762,074.46
  5. Step 5: Solve for x
    x = 26,313,762,074.46/200,031.40
  6. Step 6: Final answer
    x = 131,548.16

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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.