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Finding the Fourth Proportional to 133,028.48, 183,602.72 and 79,316.80

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Solution

The fourth proportional to 133,028.48, 183,602.72 and 79,316.80 is: 109,471.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,028.48 : 183,602.72 = 79,316.80 : x
  2. Step 2: Convert to fraction form
    133,028.48/183,602.72 = 79,316.80/x
  3. Step 3: Cross multiply
    133,028.48x = 183,602.72 × 79,316.80
  4. Step 4: Simplify right side
    133,028.48x = 14,562,780,221.70
  5. Step 5: Solve for x
    x = 14,562,780,221.70/133,028.48
  6. Step 6: Final answer
    x = 109,471.15

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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.