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Finding the Fourth Proportional to 100,976.96, 139,348.32 and 58,560.14

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Solution

The fourth proportional to 100,976.96, 139,348.32 and 58,560.14 is: 80,813.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,976.96 : 139,348.32 = 58,560.14 : x
  2. Step 2: Convert to fraction form
    100,976.96/139,348.32 = 58,560.14/x
  3. Step 3: Cross multiply
    100,976.96x = 139,348.32 × 58,560.14
  4. Step 4: Simplify right side
    100,976.96x = 8,160,257,127.96
  5. Step 5: Solve for x
    x = 8,160,257,127.96/100,976.96
  6. Step 6: Final answer
    x = 80,813.06

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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.