Home / 100,122.62-138,125.25-59,816.21

Finding the Fourth Proportional to 100,122.62, 138,125.25 and 59,816.21

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Solution

The fourth proportional to 100,122.62, 138,125.25 and 59,816.21 is: 82,520.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,122.62 : 138,125.25 = 59,816.21 : x
  2. Step 2: Convert to fraction form
    100,122.62/138,125.25 = 59,816.21/x
  3. Step 3: Cross multiply
    100,122.62x = 138,125.25 × 59,816.21
  4. Step 4: Simplify right side
    100,122.62x = 8,262,128,269.68
  5. Step 5: Solve for x
    x = 8,262,128,269.68/100,122.62
  6. Step 6: Final answer
    x = 82,520.10

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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.