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Finding the Fourth Proportional to 117,365.60, 176,026.80 and 72,912.80

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Solution

The fourth proportional to 117,365.60, 176,026.80 and 72,912.80 is: 109,355.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,365.60 : 176,026.80 = 72,912.80 : x
  2. Step 2: Convert to fraction form
    117,365.60/176,026.80 = 72,912.80/x
  3. Step 3: Cross multiply
    117,365.60x = 176,026.80 × 72,912.80
  4. Step 4: Simplify right side
    117,365.60x = 12,834,606,863.04
  5. Step 5: Solve for x
    x = 12,834,606,863.04/117,365.60
  6. Step 6: Final answer
    x = 109,355.78

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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.