Home / 100,225.42-138,309.33-54,904.30

Finding the Fourth Proportional to 100,225.42, 138,309.33 and 54,904.30

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Solution

The fourth proportional to 100,225.42, 138,309.33 and 54,904.30 is: 75,766.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,225.42 : 138,309.33 = 54,904.30 : x
  2. Step 2: Convert to fraction form
    100,225.42/138,309.33 = 54,904.30/x
  3. Step 3: Cross multiply
    100,225.42x = 138,309.33 × 54,904.30
  4. Step 4: Simplify right side
    100,225.42x = 7,593,776,947.12
  5. Step 5: Solve for x
    x = 7,593,776,947.12/100,225.42
  6. Step 6: Final answer
    x = 75,766.98

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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.