Home / 100,840.95-139,159.35-55,517.97

Finding the Fourth Proportional to 100,840.95, 139,159.35 and 55,517.97

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Solution

The fourth proportional to 100,840.95, 139,159.35 and 55,517.97 is: 76,614.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,840.95 : 139,159.35 = 55,517.97 : x
  2. Step 2: Convert to fraction form
    100,840.95/139,159.35 = 55,517.97/x
  3. Step 3: Cross multiply
    100,840.95x = 139,159.35 × 55,517.97
  4. Step 4: Simplify right side
    100,840.95x = 7,725,845,140.37
  5. Step 5: Solve for x
    x = 7,725,845,140.37/100,840.95
  6. Step 6: Final answer
    x = 76,614.16

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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.