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Finding the Fourth Proportional to 107,558.40, 161,337.60 and 77,836.80

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Solution

The fourth proportional to 107,558.40, 161,337.60 and 77,836.80 is: 116,755.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,558.40 : 161,337.60 = 77,836.80 : x
  2. Step 2: Convert to fraction form
    107,558.40/161,337.60 = 77,836.80/x
  3. Step 3: Cross multiply
    107,558.40x = 161,337.60 × 77,836.80
  4. Step 4: Simplify right side
    107,558.40x = 12,558,002,503.68
  5. Step 5: Solve for x
    x = 12,558,002,503.68/107,558.40
  6. Step 6: Final answer
    x = 116,755.20

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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.