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Finding the Fourth Proportional to 132,130.40, 198,325.20 and 65,645.60

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Solution

The fourth proportional to 132,130.40, 198,325.20 and 65,645.60 is: 98,532.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,130.40 : 198,325.20 = 65,645.60 : x
  2. Step 2: Convert to fraction form
    132,130.40/198,325.20 = 65,645.60/x
  3. Step 3: Cross multiply
    132,130.40x = 198,325.20 × 65,645.60
  4. Step 4: Simplify right side
    132,130.40x = 13,019,176,749.12
  5. Step 5: Solve for x
    x = 13,019,176,749.12/132,130.40
  6. Step 6: Final answer
    x = 98,532.79

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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.