Home / 100,838.72-139,151.52-58,394.24

Finding the Fourth Proportional to 100,838.72, 139,151.52 and 58,394.24

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Solution

The fourth proportional to 100,838.72, 139,151.52 and 58,394.24 is: 80,580.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,838.72 : 139,151.52 = 58,394.24 : x
  2. Step 2: Convert to fraction form
    100,838.72/139,151.52 = 58,394.24/x
  3. Step 3: Cross multiply
    100,838.72x = 139,151.52 × 58,394.24
  4. Step 4: Simplify right side
    100,838.72x = 8,125,647,255.24
  5. Step 5: Solve for x
    x = 8,125,647,255.24/100,838.72
  6. Step 6: Final answer
    x = 80,580.63

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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.