Home / 107,906.72-148,935.12-70,115.36

Finding the Fourth Proportional to 107,906.72, 148,935.12 and 70,115.36

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Solution

The fourth proportional to 107,906.72, 148,935.12 and 70,115.36 is: 96,774.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,906.72 : 148,935.12 = 70,115.36 : x
  2. Step 2: Convert to fraction form
    107,906.72/148,935.12 = 70,115.36/x
  3. Step 3: Cross multiply
    107,906.72x = 148,935.12 × 70,115.36
  4. Step 4: Simplify right side
    107,906.72x = 10,442,639,555.44
  5. Step 5: Solve for x
    x = 10,442,639,555.44/107,906.72
  6. Step 6: Final answer
    x = 96,774.69

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1.5x scale

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.