Home / 74,134.09-102,305.88-40,143.34

Finding the Fourth Proportional to 74,134.09, 102,305.88 and 40,143.34

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Solution

The fourth proportional to 74,134.09, 102,305.88 and 40,143.34 is: 55,398.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,134.09 : 102,305.88 = 40,143.34 : x
  2. Step 2: Convert to fraction form
    74,134.09/102,305.88 = 40,143.34/x
  3. Step 3: Cross multiply
    74,134.09x = 102,305.88 × 40,143.34
  4. Step 4: Simplify right side
    74,134.09x = 4,106,899,724.84
  5. Step 5: Solve for x
    x = 4,106,899,724.84/74,134.09
  6. Step 6: Final answer
    x = 55,398.26

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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.