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Finding the Fourth Proportional to 132,323.60, 198,485.40 and 100,830.80

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Solution

The fourth proportional to 132,323.60, 198,485.40 and 100,830.80 is: 151,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,323.60 : 198,485.40 = 100,830.80 : x
  2. Step 2: Convert to fraction form
    132,323.60/198,485.40 = 100,830.80/x
  3. Step 3: Cross multiply
    132,323.60x = 198,485.40 × 100,830.80
  4. Step 4: Simplify right side
    132,323.60x = 20,013,441,670.32
  5. Step 5: Solve for x
    x = 20,013,441,670.32/132,323.60
  6. Step 6: Final answer
    x = 151,246.20

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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.