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Finding the Fourth Proportional to 132,876.80, 199,315.20 and 69,610.40

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Solution

The fourth proportional to 132,876.80, 199,315.20 and 69,610.40 is: 104,415.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,876.80 : 199,315.20 = 69,610.40 : x
  2. Step 2: Convert to fraction form
    132,876.80/199,315.20 = 69,610.40/x
  3. Step 3: Cross multiply
    132,876.80x = 199,315.20 × 69,610.40
  4. Step 4: Simplify right side
    132,876.80x = 13,874,410,798.08
  5. Step 5: Solve for x
    x = 13,874,410,798.08/132,876.80
  6. Step 6: Final answer
    x = 104,415.60

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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.