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Finding the Fourth Proportional to 187,863.98, 259,250.76 and 102,980.84

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Solution

The fourth proportional to 187,863.98, 259,250.76 and 102,980.84 is: 142,112.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,863.98 : 259,250.76 = 102,980.84 : x
  2. Step 2: Convert to fraction form
    187,863.98/259,250.76 = 102,980.84/x
  3. Step 3: Cross multiply
    187,863.98x = 259,250.76 × 102,980.84
  4. Step 4: Simplify right side
    187,863.98x = 26,697,859,739.18
  5. Step 5: Solve for x
    x = 26,697,859,739.18/187,863.98
  6. Step 6: Final answer
    x = 142,112.72

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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.