Home / 102,780.90-154,150.16-39,579.33

Finding the Fourth Proportional to 102,780.90, 154,150.16 and 39,579.33

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Solution

The fourth proportional to 102,780.90, 154,150.16 and 39,579.33 is: 59,360.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,780.90 : 154,150.16 = 39,579.33 : x
  2. Step 2: Convert to fraction form
    102,780.90/154,150.16 = 39,579.33/x
  3. Step 3: Cross multiply
    102,780.90x = 154,150.16 × 39,579.33
  4. Step 4: Simplify right side
    102,780.90x = 6,101,160,151.14
  5. Step 5: Solve for x
    x = 6,101,160,151.14/102,780.90
  6. Step 6: Final answer
    x = 59,360.84

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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.