Home / 159,971.64-220,751.78-91,977.81

Finding the Fourth Proportional to 159,971.64, 220,751.78 and 91,977.81

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Solution

The fourth proportional to 159,971.64, 220,751.78 and 91,977.81 is: 126,924.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,971.64 : 220,751.78 = 91,977.81 : x
  2. Step 2: Convert to fraction form
    159,971.64/220,751.78 = 91,977.81/x
  3. Step 3: Cross multiply
    159,971.64x = 220,751.78 × 91,977.81
  4. Step 4: Simplify right side
    159,971.64x = 20,304,264,818.11
  5. Step 5: Solve for x
    x = 20,304,264,818.11/159,971.64
  6. Step 6: Final answer
    x = 126,924.15

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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.