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Finding the Fourth Proportional to 90,641.50, 125,100.25 and 75,510.19

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Solution

The fourth proportional to 90,641.50, 125,100.25 and 75,510.19 is: 104,216.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,641.50 : 125,100.25 = 75,510.19 : x
  2. Step 2: Convert to fraction form
    90,641.50/125,100.25 = 75,510.19/x
  3. Step 3: Cross multiply
    90,641.50x = 125,100.25 × 75,510.19
  4. Step 4: Simplify right side
    90,641.50x = 9,446,343,614.15
  5. Step 5: Solve for x
    x = 9,446,343,614.15/90,641.50
  6. Step 6: Final answer
    x = 104,216.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.