Home / 106,594.27-159,991.87-78,428.45

Finding the Fourth Proportional to 106,594.27, 159,991.87 and 78,428.45

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Solution

The fourth proportional to 106,594.27, 159,991.87 and 78,428.45 is: 117,716.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,594.27 : 159,991.87 = 78,428.45 : x
  2. Step 2: Convert to fraction form
    106,594.27/159,991.87 = 78,428.45/x
  3. Step 3: Cross multiply
    106,594.27x = 159,991.87 × 78,428.45
  4. Step 4: Simplify right side
    106,594.27x = 12,547,913,380.67
  5. Step 5: Solve for x
    x = 12,547,913,380.67/106,594.27
  6. Step 6: Final answer
    x = 117,716.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.