Home / 112,029.95-154,388.67-80,143.49

Finding the Fourth Proportional to 112,029.95, 154,388.67 and 80,143.49

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Solution

The fourth proportional to 112,029.95, 154,388.67 and 80,143.49 is: 110,445.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,029.95 : 154,388.67 = 80,143.49 : x
  2. Step 2: Convert to fraction form
    112,029.95/154,388.67 = 80,143.49/x
  3. Step 3: Cross multiply
    112,029.95x = 154,388.67 × 80,143.49
  4. Step 4: Simplify right side
    112,029.95x = 12,373,246,830.26
  5. Step 5: Solve for x
    x = 12,373,246,830.26/112,029.95
  6. Step 6: Final answer
    x = 110,445.88

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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.