Home / 112,043.16-154,659.20-100,085.72

Finding the Fourth Proportional to 112,043.16, 154,659.20 and 100,085.72

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Solution

The fourth proportional to 112,043.16, 154,659.20 and 100,085.72 is: 138,153.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,043.16 : 154,659.20 = 100,085.72 : x
  2. Step 2: Convert to fraction form
    112,043.16/154,659.20 = 100,085.72/x
  3. Step 3: Cross multiply
    112,043.16x = 154,659.20 × 100,085.72
  4. Step 4: Simplify right side
    112,043.16x = 15,479,177,386.62
  5. Step 5: Solve for x
    x = 15,479,177,386.62/112,043.16
  6. Step 6: Final answer
    x = 138,153.70

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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.