Home / 101,285.19-139,781.75-55,967.15

Finding the Fourth Proportional to 101,285.19, 139,781.75 and 55,967.15

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Solution

The fourth proportional to 101,285.19, 139,781.75 and 55,967.15 is: 77,239.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,285.19 : 139,781.75 = 55,967.15 : x
  2. Step 2: Convert to fraction form
    101,285.19/139,781.75 = 55,967.15/x
  3. Step 3: Cross multiply
    101,285.19x = 139,781.75 × 55,967.15
  4. Step 4: Simplify right side
    101,285.19x = 7,823,185,190.77
  5. Step 5: Solve for x
    x = 7,823,185,190.77/101,285.19
  6. Step 6: Final answer
    x = 77,239.18

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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.