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Finding the Fourth Proportional to 104,720.01, 157,020.48 and 71,480.31

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Solution

The fourth proportional to 104,720.01, 157,020.48 and 71,480.31 is: 107,179.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,720.01 : 157,020.48 = 71,480.31 : x
  2. Step 2: Convert to fraction form
    104,720.01/157,020.48 = 71,480.31/x
  3. Step 3: Cross multiply
    104,720.01x = 157,020.48 × 71,480.31
  4. Step 4: Simplify right side
    104,720.01x = 11,223,872,586.75
  5. Step 5: Solve for x
    x = 11,223,872,586.75/104,720.01
  6. Step 6: Final answer
    x = 107,179.83

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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.