Home / 159,435.38-220,030.81-87,815.39

Finding the Fourth Proportional to 159,435.38, 220,030.81 and 87,815.39

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Solution

The fourth proportional to 159,435.38, 220,030.81 and 87,815.39 is: 121,190.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,435.38 : 220,030.81 = 87,815.39 : x
  2. Step 2: Convert to fraction form
    159,435.38/220,030.81 = 87,815.39/x
  3. Step 3: Cross multiply
    159,435.38x = 220,030.81 × 87,815.39
  4. Step 4: Simplify right side
    159,435.38x = 19,322,090,072.47
  5. Step 5: Solve for x
    x = 19,322,090,072.47/159,435.38
  6. Step 6: Final answer
    x = 121,190.73

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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.