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Finding the Fourth Proportional to 97,869.60, 134,859.60 and 80,935.20

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Solution

The fourth proportional to 97,869.60, 134,859.60 and 80,935.20 is: 111,524.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,869.60 : 134,859.60 = 80,935.20 : x
  2. Step 2: Convert to fraction form
    97,869.60/134,859.60 = 80,935.20/x
  3. Step 3: Cross multiply
    97,869.60x = 134,859.60 × 80,935.20
  4. Step 4: Simplify right side
    97,869.60x = 10,914,888,697.92
  5. Step 5: Solve for x
    x = 10,914,888,697.92/97,869.60
  6. Step 6: Final answer
    x = 111,524.81

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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.