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Finding the Fourth Proportional to 102,510.90, 141,255.09 and 75,610.80

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Solution

The fourth proportional to 102,510.90, 141,255.09 and 75,610.80 is: 104,188.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,510.90 : 141,255.09 = 75,610.80 : x
  2. Step 2: Convert to fraction form
    102,510.90/141,255.09 = 75,610.80/x
  3. Step 3: Cross multiply
    102,510.90x = 141,255.09 × 75,610.80
  4. Step 4: Simplify right side
    102,510.90x = 10,680,410,358.97
  5. Step 5: Solve for x
    x = 10,680,410,358.97/102,510.90
  6. Step 6: Final answer
    x = 104,188.05

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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.