Home / 159,386.12-219,933.72-91,399.60

Finding the Fourth Proportional to 159,386.12, 219,933.72 and 91,399.60

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Solution

The fourth proportional to 159,386.12, 219,933.72 and 91,399.60 is: 126,120.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,386.12 : 219,933.72 = 91,399.60 : x
  2. Step 2: Convert to fraction form
    159,386.12/219,933.72 = 91,399.60/x
  3. Step 3: Cross multiply
    159,386.12x = 219,933.72 × 91,399.60
  4. Step 4: Simplify right side
    159,386.12x = 20,101,854,034.51
  5. Step 5: Solve for x
    x = 20,101,854,034.51/159,386.12
  6. Step 6: Final answer
    x = 126,120.48

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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.