Home / 138,557.75-191,209.70-100,863.59

Finding the Fourth Proportional to 138,557.75, 191,209.70 and 100,863.59

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Solution

The fourth proportional to 138,557.75, 191,209.70 and 100,863.59 is: 139,191.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,557.75 : 191,209.70 = 100,863.59 : x
  2. Step 2: Convert to fraction form
    138,557.75/191,209.70 = 100,863.59/x
  3. Step 3: Cross multiply
    138,557.75x = 191,209.70 × 100,863.59
  4. Step 4: Simplify right side
    138,557.75x = 19,286,096,280.51
  5. Step 5: Solve for x
    x = 19,286,096,280.51/138,557.75
  6. Step 6: Final answer
    x = 139,191.75

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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.