Home / 137,250.24-189,405.30-76,820.88

Finding the Fourth Proportional to 137,250.24, 189,405.30 and 76,820.88

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Solution

The fourth proportional to 137,250.24, 189,405.30 and 76,820.88 is: 106,012.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,250.24 : 189,405.30 = 76,820.88 : x
  2. Step 2: Convert to fraction form
    137,250.24/189,405.30 = 76,820.88/x
  3. Step 3: Cross multiply
    137,250.24x = 189,405.30 × 76,820.88
  4. Step 4: Simplify right side
    137,250.24x = 14,550,281,822.66
  5. Step 5: Solve for x
    x = 14,550,281,822.66/137,250.24
  6. Step 6: Final answer
    x = 106,012.80

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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.