Home / 159,025.14-219,456.40-86,428.05

Finding the Fourth Proportional to 159,025.14, 219,456.40 and 86,428.05

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Solution

The fourth proportional to 159,025.14, 219,456.40 and 86,428.05 is: 119,271.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,025.14 : 219,456.40 = 86,428.05 : x
  2. Step 2: Convert to fraction form
    159,025.14/219,456.40 = 86,428.05/x
  3. Step 3: Cross multiply
    159,025.14x = 219,456.40 × 86,428.05
  4. Step 4: Simplify right side
    159,025.14x = 18,967,188,712.02
  5. Step 5: Solve for x
    x = 18,967,188,712.02/159,025.14
  6. Step 6: Final answer
    x = 119,271.64

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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.