Home / 124,621.85-186,976.52-77,820.05

Finding the Fourth Proportional to 124,621.85, 186,976.52 and 77,820.05

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Solution

The fourth proportional to 124,621.85, 186,976.52 and 77,820.05 is: 116,757.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,621.85 : 186,976.52 = 77,820.05 : x
  2. Step 2: Convert to fraction form
    124,621.85/186,976.52 = 77,820.05/x
  3. Step 3: Cross multiply
    124,621.85x = 186,976.52 × 77,820.05
  4. Step 4: Simplify right side
    124,621.85x = 14,550,522,505.39
  5. Step 5: Solve for x
    x = 14,550,522,505.39/124,621.85
  6. Step 6: Final answer
    x = 116,757.39

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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.