Home / 101,015.78-139,398.76-55,073.66

Finding the Fourth Proportional to 101,015.78, 139,398.76 and 55,073.66

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Solution

The fourth proportional to 101,015.78, 139,398.76 and 55,073.66 is: 76,000.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,015.78 : 139,398.76 = 55,073.66 : x
  2. Step 2: Convert to fraction form
    101,015.78/139,398.76 = 55,073.66/x
  3. Step 3: Cross multiply
    101,015.78x = 139,398.76 × 55,073.66
  4. Step 4: Simplify right side
    101,015.78x = 7,677,199,912.66
  5. Step 5: Solve for x
    x = 7,677,199,912.66/101,015.78
  6. Step 6: Final answer
    x = 76,000.01

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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.