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Finding the Fourth Proportional to 104,004.40, 156,031.80 and 30,132.40

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Solution

The fourth proportional to 104,004.40, 156,031.80 and 30,132.40 is: 45,205.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,004.40 : 156,031.80 = 30,132.40 : x
  2. Step 2: Convert to fraction form
    104,004.40/156,031.80 = 30,132.40/x
  3. Step 3: Cross multiply
    104,004.40x = 156,031.80 × 30,132.40
  4. Step 4: Simplify right side
    104,004.40x = 4,701,612,610.32
  5. Step 5: Solve for x
    x = 4,701,612,610.32/104,004.40
  6. Step 6: Final answer
    x = 45,205.90

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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.