Home / 100,887.35-139,222.82-55,569.56

Finding the Fourth Proportional to 100,887.35, 139,222.82 and 55,569.56

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Solution

The fourth proportional to 100,887.35, 139,222.82 and 55,569.56 is: 76,685.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,887.35 : 139,222.82 = 55,569.56 : x
  2. Step 2: Convert to fraction form
    100,887.35/139,222.82 = 55,569.56/x
  3. Step 3: Cross multiply
    100,887.35x = 139,222.82 × 55,569.56
  4. Step 4: Simplify right side
    100,887.35x = 7,736,549,875.40
  5. Step 5: Solve for x
    x = 7,736,549,875.40/100,887.35
  6. Step 6: Final answer
    x = 76,685.04

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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.