Home / 90,779.94-125,089.11-89,555.22

Finding the Fourth Proportional to 90,779.94, 125,089.11 and 89,555.22

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Solution

The fourth proportional to 90,779.94, 125,089.11 and 89,555.22 is: 123,401.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,779.94 : 125,089.11 = 89,555.22 : x
  2. Step 2: Convert to fraction form
    90,779.94/125,089.11 = 89,555.22/x
  3. Step 3: Cross multiply
    90,779.94x = 125,089.11 × 89,555.22
  4. Step 4: Simplify right side
    90,779.94x = 11,202,382,765.65
  5. Step 5: Solve for x
    x = 11,202,382,765.65/90,779.94
  6. Step 6: Final answer
    x = 123,401.52

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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.