Home / 100,334.52-138,464.28-56,723.60

Finding the Fourth Proportional to 100,334.52, 138,464.28 and 56,723.60

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Solution

The fourth proportional to 100,334.52, 138,464.28 and 56,723.60 is: 78,280.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,334.52 : 138,464.28 = 56,723.60 : x
  2. Step 2: Convert to fraction form
    100,334.52/138,464.28 = 56,723.60/x
  3. Step 3: Cross multiply
    100,334.52x = 138,464.28 × 56,723.60
  4. Step 4: Simplify right side
    100,334.52x = 7,854,192,433.01
  5. Step 5: Solve for x
    x = 7,854,192,433.01/100,334.52
  6. Step 6: Final answer
    x = 78,280.06

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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.