Home / 137,149.20-189,283.32-76,723.20

Finding the Fourth Proportional to 137,149.20, 189,283.32 and 76,723.20

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Solution

The fourth proportional to 137,149.20, 189,283.32 and 76,723.20 is: 105,887.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,149.20 : 189,283.32 = 76,723.20 : x
  2. Step 2: Convert to fraction form
    137,149.20/189,283.32 = 76,723.20/x
  3. Step 3: Cross multiply
    137,149.20x = 189,283.32 × 76,723.20
  4. Step 4: Simplify right side
    137,149.20x = 14,522,422,017.02
  5. Step 5: Solve for x
    x = 14,522,422,017.02/137,149.20
  6. Step 6: Final answer
    x = 105,887.76

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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.