Home / 100,276.40-138,344.82-59,991.32

Finding the Fourth Proportional to 100,276.40, 138,344.82 and 59,991.32

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Solution

The fourth proportional to 100,276.40, 138,344.82 and 59,991.32 is: 82,766.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,276.40 : 138,344.82 = 59,991.32 : x
  2. Step 2: Convert to fraction form
    100,276.40/138,344.82 = 59,991.32/x
  3. Step 3: Cross multiply
    100,276.40x = 138,344.82 × 59,991.32
  4. Step 4: Simplify right side
    100,276.40x = 8,299,488,366.96
  5. Step 5: Solve for x
    x = 8,299,488,366.96/100,276.40
  6. Step 6: Final answer
    x = 82,766.12

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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.