Home / 100,906.96-139,251.62-58,490.10

Finding the Fourth Proportional to 100,906.96, 139,251.62 and 58,490.10

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Solution

The fourth proportional to 100,906.96, 139,251.62 and 58,490.10 is: 80,716.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,906.96 : 139,251.62 = 58,490.10 : x
  2. Step 2: Convert to fraction form
    100,906.96/139,251.62 = 58,490.10/x
  3. Step 3: Cross multiply
    100,906.96x = 139,251.62 × 58,490.10
  4. Step 4: Simplify right side
    100,906.96x = 8,144,841,178.96
  5. Step 5: Solve for x
    x = 8,144,841,178.96/100,906.96
  6. Step 6: Final answer
    x = 80,716.35

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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.