Home / 104,189.11-143,780.83-56,442.65

Finding the Fourth Proportional to 104,189.11, 143,780.83 and 56,442.65

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Solution

The fourth proportional to 104,189.11, 143,780.83 and 56,442.65 is: 77,890.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,189.11 : 143,780.83 = 56,442.65 : x
  2. Step 2: Convert to fraction form
    104,189.11/143,780.83 = 56,442.65/x
  3. Step 3: Cross multiply
    104,189.11x = 143,780.83 × 56,442.65
  4. Step 4: Simplify right side
    104,189.11x = 8,115,371,064.40
  5. Step 5: Solve for x
    x = 8,115,371,064.40/104,189.11
  6. Step 6: Final answer
    x = 77,890.78

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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.