Home / 129,569.79-178,745.22-75,821.84

Finding the Fourth Proportional to 129,569.79, 178,745.22 and 75,821.84

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Solution

The fourth proportional to 129,569.79, 178,745.22 and 75,821.84 is: 104,598.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,569.79 : 178,745.22 = 75,821.84 : x
  2. Step 2: Convert to fraction form
    129,569.79/178,745.22 = 75,821.84/x
  3. Step 3: Cross multiply
    129,569.79x = 178,745.22 × 75,821.84
  4. Step 4: Simplify right side
    129,569.79x = 13,552,791,471.60
  5. Step 5: Solve for x
    x = 13,552,791,471.60/129,569.79
  6. Step 6: Final answer
    x = 104,598.39

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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.