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Finding the Fourth Proportional to 101,422.20, 139,967.95 and 58,408.22

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Solution

The fourth proportional to 101,422.20, 139,967.95 and 58,408.22 is: 80,606.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,422.20 : 139,967.95 = 58,408.22 : x
  2. Step 2: Convert to fraction form
    101,422.20/139,967.95 = 58,408.22/x
  3. Step 3: Cross multiply
    101,422.20x = 139,967.95 × 58,408.22
  4. Step 4: Simplify right side
    101,422.20x = 8,175,278,816.55
  5. Step 5: Solve for x
    x = 8,175,278,816.55/101,422.20
  6. Step 6: Final answer
    x = 80,606.40

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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.