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Finding the Fourth Proportional to 225,118.11, 310,652.72 and 123,142.11

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Solution

The fourth proportional to 225,118.11, 310,652.72 and 123,142.11 is: 169,930.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,118.11 : 310,652.72 = 123,142.11 : x
  2. Step 2: Convert to fraction form
    225,118.11/310,652.72 = 123,142.11/x
  3. Step 3: Cross multiply
    225,118.11x = 310,652.72 × 123,142.11
  4. Step 4: Simplify right side
    225,118.11x = 38,254,430,802.33
  5. Step 5: Solve for x
    x = 38,254,430,802.33/225,118.11
  6. Step 6: Final answer
    x = 169,930.49

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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.