Home / 143,323.97-197,445.20-100,222.92

Finding the Fourth Proportional to 143,323.97, 197,445.20 and 100,222.92

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Solution

The fourth proportional to 143,323.97, 197,445.20 and 100,222.92 is: 138,068.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,323.97 : 197,445.20 = 100,222.92 : x
  2. Step 2: Convert to fraction form
    143,323.97/197,445.20 = 100,222.92/x
  3. Step 3: Cross multiply
    143,323.97x = 197,445.20 × 100,222.92
  4. Step 4: Simplify right side
    143,323.97x = 19,788,533,982.87
  5. Step 5: Solve for x
    x = 19,788,533,982.87/143,323.97
  6. Step 6: Final answer
    x = 138,068.56

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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.