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Finding the Fourth Proportional to 187,886.70, 259,281.72 and 103,003.56

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Solution

The fourth proportional to 187,886.70, 259,281.72 and 103,003.56 is: 142,143.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,886.70 : 259,281.72 = 103,003.56 : x
  2. Step 2: Convert to fraction form
    187,886.70/259,281.72 = 103,003.56/x
  3. Step 3: Cross multiply
    187,886.70x = 259,281.72 × 103,003.56
  4. Step 4: Simplify right side
    187,886.70x = 26,706,940,202.92
  5. Step 5: Solve for x
    x = 26,706,940,202.92/187,886.70
  6. Step 6: Final answer
    x = 142,143.86

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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.