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Finding the Fourth Proportional to 132,906.90, 183,415.95 and 72,480.84

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Solution

The fourth proportional to 132,906.90, 183,415.95 and 72,480.84 is: 100,025.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,906.90 : 183,415.95 = 72,480.84 : x
  2. Step 2: Convert to fraction form
    132,906.90/183,415.95 = 72,480.84/x
  3. Step 3: Cross multiply
    132,906.90x = 183,415.95 × 72,480.84
  4. Step 4: Simplify right side
    132,906.90x = 13,294,142,125.40
  5. Step 5: Solve for x
    x = 13,294,142,125.40/132,906.90
  6. Step 6: Final answer
    x = 100,025.97

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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.