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Finding the Fourth Proportional to 102,249.96, 141,116.22 and 90,828.96

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Solution

The fourth proportional to 102,249.96, 141,116.22 and 90,828.96 is: 125,353.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,249.96 : 141,116.22 = 90,828.96 : x
  2. Step 2: Convert to fraction form
    102,249.96/141,116.22 = 90,828.96/x
  3. Step 3: Cross multiply
    102,249.96x = 141,116.22 × 90,828.96
  4. Step 4: Simplify right side
    102,249.96x = 12,817,439,501.73
  5. Step 5: Solve for x
    x = 12,817,439,501.73/102,249.96
  6. Step 6: Final answer
    x = 125,353.98

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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.