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Finding the Fourth Proportional to 154,920.80, 231,862.80 and 136,258.40

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Solution

The fourth proportional to 154,920.80, 231,862.80 and 136,258.40 is: 203,931.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,920.80 : 231,862.80 = 136,258.40 : x
  2. Step 2: Convert to fraction form
    154,920.80/231,862.80 = 136,258.40/x
  3. Step 3: Cross multiply
    154,920.80x = 231,862.80 × 136,258.40
  4. Step 4: Simplify right side
    154,920.80x = 31,593,254,147.52
  5. Step 5: Solve for x
    x = 31,593,254,147.52/154,920.80
  6. Step 6: Final answer
    x = 203,931.65

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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.