Home / 100,863.51-139,186.26-55,539.96

Finding the Fourth Proportional to 100,863.51, 139,186.26 and 55,539.96

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Solution

The fourth proportional to 100,863.51, 139,186.26 and 55,539.96 is: 76,642.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,863.51 : 139,186.26 = 55,539.96 : x
  2. Step 2: Convert to fraction form
    100,863.51/139,186.26 = 55,539.96/x
  3. Step 3: Cross multiply
    100,863.51x = 139,186.26 × 55,539.96
  4. Step 4: Simplify right side
    100,863.51x = 7,730,399,312.95
  5. Step 5: Solve for x
    x = 7,730,399,312.95/100,863.51
  6. Step 6: Final answer
    x = 76,642.18

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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.