Home / 129,410.19-178,585.83-75,684.11

Finding the Fourth Proportional to 129,410.19, 178,585.83 and 75,684.11

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Solution

The fourth proportional to 129,410.19, 178,585.83 and 75,684.11 is: 104,443.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,410.19 : 178,585.83 = 75,684.11 : x
  2. Step 2: Convert to fraction form
    129,410.19/178,585.83 = 75,684.11/x
  3. Step 3: Cross multiply
    129,410.19x = 178,585.83 × 75,684.11
  4. Step 4: Simplify right side
    129,410.19x = 13,516,108,709.23
  5. Step 5: Solve for x
    x = 13,516,108,709.23/129,410.19
  6. Step 6: Final answer
    x = 104,443.93

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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.