Home / 100,919.90-139,212.60-58,472.66

Finding the Fourth Proportional to 100,919.90, 139,212.60 and 58,472.66

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Solution

The fourth proportional to 100,919.90, 139,212.60 and 58,472.66 is: 80,659.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,919.90 : 139,212.60 = 58,472.66 : x
  2. Step 2: Convert to fraction form
    100,919.90/139,212.60 = 58,472.66/x
  3. Step 3: Cross multiply
    100,919.90x = 139,212.60 × 58,472.66
  4. Step 4: Simplify right side
    100,919.90x = 8,140,131,027.52
  5. Step 5: Solve for x
    x = 8,140,131,027.52/100,919.90
  6. Step 6: Final answer
    x = 80,659.33

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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.