Home / 137,566.55-206,388.41-78,444.05

Finding the Fourth Proportional to 137,566.55, 206,388.41 and 78,444.05

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Solution

The fourth proportional to 137,566.55, 206,388.41 and 78,444.05 is: 117,688.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,566.55 : 206,388.41 = 78,444.05 : x
  2. Step 2: Convert to fraction form
    137,566.55/206,388.41 = 78,444.05/x
  3. Step 3: Cross multiply
    137,566.55x = 206,388.41 × 78,444.05
  4. Step 4: Simplify right side
    137,566.55x = 16,189,941,329.30
  5. Step 5: Solve for x
    x = 16,189,941,329.30/137,566.55
  6. Step 6: Final answer
    x = 117,688.06

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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.