Home / 137,412.83-189,635.15-76,983.98

Finding the Fourth Proportional to 137,412.83, 189,635.15 and 76,983.98

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Solution

The fourth proportional to 137,412.83, 189,635.15 and 76,983.98 is: 106,240.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,412.83 : 189,635.15 = 76,983.98 : x
  2. Step 2: Convert to fraction form
    137,412.83/189,635.15 = 76,983.98/x
  3. Step 3: Cross multiply
    137,412.83x = 189,635.15 × 76,983.98
  4. Step 4: Simplify right side
    137,412.83x = 14,598,867,839.18
  5. Step 5: Solve for x
    x = 14,598,867,839.18/137,412.83
  6. Step 6: Final answer
    x = 106,240.94

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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.