Home / 160,815.92-221,780.75-100,392.17

Finding the Fourth Proportional to 160,815.92, 221,780.75 and 100,392.17

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Solution

The fourth proportional to 160,815.92, 221,780.75 and 100,392.17 is: 138,450.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,815.92 : 221,780.75 = 100,392.17 : x
  2. Step 2: Convert to fraction form
    160,815.92/221,780.75 = 100,392.17/x
  3. Step 3: Cross multiply
    160,815.92x = 221,780.75 × 100,392.17
  4. Step 4: Simplify right side
    160,815.92x = 22,265,049,145.86
  5. Step 5: Solve for x
    x = 22,265,049,145.86/160,815.92
  6. Step 6: Final answer
    x = 138,450.53

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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.