Home / 147,379.47-203,377.71-90,115.26

Finding the Fourth Proportional to 147,379.47, 203,377.71 and 90,115.26

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Solution

The fourth proportional to 147,379.47, 203,377.71 and 90,115.26 is: 124,355.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,379.47 : 203,377.71 = 90,115.26 : x
  2. Step 2: Convert to fraction form
    147,379.47/203,377.71 = 90,115.26/x
  3. Step 3: Cross multiply
    147,379.47x = 203,377.71 × 90,115.26
  4. Step 4: Simplify right side
    147,379.47x = 18,327,435,214.85
  5. Step 5: Solve for x
    x = 18,327,435,214.85/147,379.47
  6. Step 6: Final answer
    x = 124,355.42

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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.