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Finding the Fourth Proportional to 134,409.70, 185,408.13 and 84,021.22

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Solution

The fourth proportional to 134,409.70, 185,408.13 and 84,021.22 is: 115,900.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,409.70 : 185,408.13 = 84,021.22 : x
  2. Step 2: Convert to fraction form
    134,409.70/185,408.13 = 84,021.22/x
  3. Step 3: Cross multiply
    134,409.70x = 185,408.13 × 84,021.22
  4. Step 4: Simplify right side
    134,409.70x = 15,578,217,280.52
  5. Step 5: Solve for x
    x = 15,578,217,280.52/134,409.70
  6. Step 6: Final answer
    x = 115,900.99

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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.