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Finding the Fourth Proportional to 155,881.80, 233,790.30 and 67,138.20

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Solution

The fourth proportional to 155,881.80, 233,790.30 and 67,138.20 is: 100,693.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,881.80 : 233,790.30 = 67,138.20 : x
  2. Step 2: Convert to fraction form
    155,881.80/233,790.30 = 67,138.20/x
  3. Step 3: Cross multiply
    155,881.80x = 233,790.30 × 67,138.20
  4. Step 4: Simplify right side
    155,881.80x = 15,696,259,919.46
  5. Step 5: Solve for x
    x = 15,696,259,919.46/155,881.80
  6. Step 6: Final answer
    x = 100,693.35

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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.