Home / 112,138.28-154,755.78-64,393.64

Finding the Fourth Proportional to 112,138.28, 154,755.78 and 64,393.64

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Solution

The fourth proportional to 112,138.28, 154,755.78 and 64,393.64 is: 88,866.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,138.28 : 154,755.78 = 64,393.64 : x
  2. Step 2: Convert to fraction form
    112,138.28/154,755.78 = 64,393.64/x
  3. Step 3: Cross multiply
    112,138.28x = 154,755.78 × 64,393.64
  4. Step 4: Simplify right side
    112,138.28x = 9,965,287,985.24
  5. Step 5: Solve for x
    x = 9,965,287,985.24/112,138.28
  6. Step 6: Final answer
    x = 88,866.07

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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.