Home / 106,479.54-159,386.97-78,431.25

Finding the Fourth Proportional to 106,479.54, 159,386.97 and 78,431.25

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Solution

The fourth proportional to 106,479.54, 159,386.97 and 78,431.25 is: 117,402.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,479.54 : 159,386.97 = 78,431.25 : x
  2. Step 2: Convert to fraction form
    106,479.54/159,386.97 = 78,431.25/x
  3. Step 3: Cross multiply
    106,479.54x = 159,386.97 × 78,431.25
  4. Step 4: Simplify right side
    106,479.54x = 12,500,919,290.81
  5. Step 5: Solve for x
    x = 12,500,919,290.81/106,479.54
  6. Step 6: Final answer
    x = 117,402.08

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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.