Home / 119,115.19-164,379.29-65,403.69

Finding the Fourth Proportional to 119,115.19, 164,379.29 and 65,403.69

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Solution

The fourth proportional to 119,115.19, 164,379.29 and 65,403.69 is: 90,257.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,115.19 : 164,379.29 = 65,403.69 : x
  2. Step 2: Convert to fraction form
    119,115.19/164,379.29 = 65,403.69/x
  3. Step 3: Cross multiply
    119,115.19x = 164,379.29 × 65,403.69
  4. Step 4: Simplify right side
    119,115.19x = 10,751,012,125.58
  5. Step 5: Solve for x
    x = 10,751,012,125.58/119,115.19
  6. Step 6: Final answer
    x = 90,257.27

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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.