Home / 124,138.72-186,095.12-45,234.96

Finding the Fourth Proportional to 124,138.72, 186,095.12 and 45,234.96

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Solution

The fourth proportional to 124,138.72, 186,095.12 and 45,234.96 is: 67,811.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,138.72 : 186,095.12 = 45,234.96 : x
  2. Step 2: Convert to fraction form
    124,138.72/186,095.12 = 45,234.96/x
  3. Step 3: Cross multiply
    124,138.72x = 186,095.12 × 45,234.96
  4. Step 4: Simplify right side
    124,138.72x = 8,418,005,309.40
  5. Step 5: Solve for x
    x = 8,418,005,309.40/124,138.72
  6. Step 6: Final answer
    x = 67,811.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.