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Finding the Fourth Proportional to 154,652.20, 231,978.30 and 75,920.20

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Solution

The fourth proportional to 154,652.20, 231,978.30 and 75,920.20 is: 113,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,652.20 : 231,978.30 = 75,920.20 : x
  2. Step 2: Convert to fraction form
    154,652.20/231,978.30 = 75,920.20/x
  3. Step 3: Cross multiply
    154,652.20x = 231,978.30 × 75,920.20
  4. Step 4: Simplify right side
    154,652.20x = 17,611,838,931.66
  5. Step 5: Solve for x
    x = 17,611,838,931.66/154,652.20
  6. Step 6: Final answer
    x = 113,880.30

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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.