Home / 160,815.08-221,852.04-100,400.70

Finding the Fourth Proportional to 160,815.08, 221,852.04 and 100,400.70

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Solution

The fourth proportional to 160,815.08, 221,852.04 and 100,400.70 is: 138,507.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,815.08 : 221,852.04 = 100,400.70 : x
  2. Step 2: Convert to fraction form
    160,815.08/221,852.04 = 100,400.70/x
  3. Step 3: Cross multiply
    160,815.08x = 221,852.04 × 100,400.70
  4. Step 4: Simplify right side
    160,815.08x = 22,274,100,112.43
  5. Step 5: Solve for x
    x = 22,274,100,112.43/160,815.08
  6. Step 6: Final answer
    x = 138,507.53

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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.