Home / 129,574.05-178,751.07-75,825.81

Finding the Fourth Proportional to 129,574.05, 178,751.07 and 75,825.81

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Solution

The fourth proportional to 129,574.05, 178,751.07 and 75,825.81 is: 104,603.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,574.05 : 178,751.07 = 75,825.81 : x
  2. Step 2: Convert to fraction form
    129,574.05/178,751.07 = 75,825.81/x
  3. Step 3: Cross multiply
    129,574.05x = 178,751.07 × 75,825.81
  4. Step 4: Simplify right side
    129,574.05x = 13,553,944,671.12
  5. Step 5: Solve for x
    x = 13,553,944,671.12/129,574.05
  6. Step 6: Final answer
    x = 104,603.85

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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.