Home / 137,158.64-189,279.21-76,730.30

Finding the Fourth Proportional to 137,158.64, 189,279.21 and 76,730.30

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Solution

The fourth proportional to 137,158.64, 189,279.21 and 76,730.30 is: 105,887.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,158.64 : 189,279.21 = 76,730.30 : x
  2. Step 2: Convert to fraction form
    137,158.64/189,279.21 = 76,730.30/x
  3. Step 3: Cross multiply
    137,158.64x = 189,279.21 × 76,730.30
  4. Step 4: Simplify right side
    137,158.64x = 14,523,449,438.44
  5. Step 5: Solve for x
    x = 14,523,449,438.44/137,158.64
  6. Step 6: Final answer
    x = 105,887.97

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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.