Home / 112,381.43-154,941.66-80,152.79

Finding the Fourth Proportional to 112,381.43, 154,941.66 and 80,152.79

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Solution

The fourth proportional to 112,381.43, 154,941.66 and 80,152.79 is: 110,507.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,381.43 : 154,941.66 = 80,152.79 : x
  2. Step 2: Convert to fraction form
    112,381.43/154,941.66 = 80,152.79/x
  3. Step 3: Cross multiply
    112,381.43x = 154,941.66 × 80,152.79
  4. Step 4: Simplify right side
    112,381.43x = 12,419,006,433.07
  5. Step 5: Solve for x
    x = 12,419,006,433.07/112,381.43
  6. Step 6: Final answer
    x = 110,507.64

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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.