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Finding the Fourth Proportional to 104,385.72, 156,604.50 and 30,513.72

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Solution

The fourth proportional to 104,385.72, 156,604.50 and 30,513.72 is: 45,778.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,385.72 : 156,604.50 = 30,513.72 : x
  2. Step 2: Convert to fraction form
    104,385.72/156,604.50 = 30,513.72/x
  3. Step 3: Cross multiply
    104,385.72x = 156,604.50 × 30,513.72
  4. Step 4: Simplify right side
    104,385.72x = 4,778,585,863.74
  5. Step 5: Solve for x
    x = 4,778,585,863.74/104,385.72
  6. Step 6: Final answer
    x = 45,778.16

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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.