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Finding the Fourth Proportional to 132,326.40, 198,489.60 and 87,225.60

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Solution

The fourth proportional to 132,326.40, 198,489.60 and 87,225.60 is: 130,838.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,326.40 : 198,489.60 = 87,225.60 : x
  2. Step 2: Convert to fraction form
    132,326.40/198,489.60 = 87,225.60/x
  3. Step 3: Cross multiply
    132,326.40x = 198,489.60 × 87,225.60
  4. Step 4: Simplify right side
    132,326.40x = 17,313,374,453.76
  5. Step 5: Solve for x
    x = 17,313,374,453.76/132,326.40
  6. Step 6: Final answer
    x = 130,838.40

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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.