Home / 189,144.90-261,016.28-103,104.66

Finding the Fourth Proportional to 189,144.90, 261,016.28 and 103,104.66

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Solution

The fourth proportional to 189,144.90, 261,016.28 and 103,104.66 is: 142,282.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,144.90 : 261,016.28 = 103,104.66 : x
  2. Step 2: Convert to fraction form
    189,144.90/261,016.28 = 103,104.66/x
  3. Step 3: Cross multiply
    189,144.90x = 261,016.28 × 103,104.66
  4. Step 4: Simplify right side
    189,144.90x = 26,911,994,803.86
  5. Step 5: Solve for x
    x = 26,911,994,803.86/189,144.90
  6. Step 6: Final answer
    x = 142,282.42

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1.5x scale

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.