Home / 112,378.52-155,087.06-64,631.90

Finding the Fourth Proportional to 112,378.52, 155,087.06 and 64,631.90

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Solution

The fourth proportional to 112,378.52, 155,087.06 and 64,631.90 is: 89,194.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,378.52 : 155,087.06 = 64,631.90 : x
  2. Step 2: Convert to fraction form
    112,378.52/155,087.06 = 64,631.90/x
  3. Step 3: Cross multiply
    112,378.52x = 155,087.06 × 64,631.90
  4. Step 4: Simplify right side
    112,378.52x = 10,023,571,353.21
  5. Step 5: Solve for x
    x = 10,023,571,353.21/112,378.52
  6. Step 6: Final answer
    x = 89,194.73

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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.