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Finding the Fourth Proportional to 87,606.60, 131,409.90 and 70,110.60

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Solution

The fourth proportional to 87,606.60, 131,409.90 and 70,110.60 is: 105,165.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,606.60 : 131,409.90 = 70,110.60 : x
  2. Step 2: Convert to fraction form
    87,606.60/131,409.90 = 70,110.60/x
  3. Step 3: Cross multiply
    87,606.60x = 131,409.90 × 70,110.60
  4. Step 4: Simplify right side
    87,606.60x = 9,213,226,934.94
  5. Step 5: Solve for x
    x = 9,213,226,934.94/87,606.60
  6. Step 6: Final answer
    x = 105,165.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.