Home / 254,438.04-381,657.06-85,959.12

Finding the Fourth Proportional to 254,438.04, 381,657.06 and 85,959.12

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Solution

The fourth proportional to 254,438.04, 381,657.06 and 85,959.12 is: 128,938.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,438.04 : 381,657.06 = 85,959.12 : x
  2. Step 2: Convert to fraction form
    254,438.04/381,657.06 = 85,959.12/x
  3. Step 3: Cross multiply
    254,438.04x = 381,657.06 × 85,959.12
  4. Step 4: Simplify right side
    254,438.04x = 32,806,905,019.39
  5. Step 5: Solve for x
    x = 32,806,905,019.39/254,438.04
  6. Step 6: Final answer
    x = 128,938.68

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.