Home / 100,832.91-139,136.72-58,391.07

Finding the Fourth Proportional to 100,832.91, 139,136.72 and 58,391.07

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Solution

The fourth proportional to 100,832.91, 139,136.72 and 58,391.07 is: 80,572.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,832.91 : 139,136.72 = 58,391.07 : x
  2. Step 2: Convert to fraction form
    100,832.91/139,136.72 = 58,391.07/x
  3. Step 3: Cross multiply
    100,832.91x = 139,136.72 × 58,391.07
  4. Step 4: Simplify right side
    100,832.91x = 8,124,341,665.14
  5. Step 5: Solve for x
    x = 8,124,341,665.14/100,832.91
  6. Step 6: Final answer
    x = 80,572.32

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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.