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Finding the Fourth Proportional to 101,351.39, 139,864.89 and 55,411.19

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Solution

The fourth proportional to 101,351.39, 139,864.89 and 55,411.19 is: 76,467.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,351.39 : 139,864.89 = 55,411.19 : x
  2. Step 2: Convert to fraction form
    101,351.39/139,864.89 = 55,411.19/x
  3. Step 3: Cross multiply
    101,351.39x = 139,864.89 × 55,411.19
  4. Step 4: Simplify right side
    101,351.39x = 7,750,080,027.08
  5. Step 5: Solve for x
    x = 7,750,080,027.08/101,351.39
  6. Step 6: Final answer
    x = 76,467.43

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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.