Home / 126,458.08-189,916.64-109,683.72

Finding the Fourth Proportional to 126,458.08, 189,916.64 and 109,683.72

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Solution

The fourth proportional to 126,458.08, 189,916.64 and 109,683.72 is: 164,724.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,458.08 : 189,916.64 = 109,683.72 : x
  2. Step 2: Convert to fraction form
    126,458.08/189,916.64 = 109,683.72/x
  3. Step 3: Cross multiply
    126,458.08x = 189,916.64 × 109,683.72
  4. Step 4: Simplify right side
    126,458.08x = 20,830,763,565.10
  5. Step 5: Solve for x
    x = 20,830,763,565.10/126,458.08
  6. Step 6: Final answer
    x = 164,724.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.