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Finding the Fourth Proportional to 133,057.72, 183,611.80 and 72,616.20

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Solution

The fourth proportional to 133,057.72, 183,611.80 and 72,616.20 is: 100,206.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,057.72 : 183,611.80 = 72,616.20 : x
  2. Step 2: Convert to fraction form
    133,057.72/183,611.80 = 72,616.20/x
  3. Step 3: Cross multiply
    133,057.72x = 183,611.80 × 72,616.20
  4. Step 4: Simplify right side
    133,057.72x = 13,333,191,191.16
  5. Step 5: Solve for x
    x = 13,333,191,191.16/133,057.72
  6. Step 6: Final answer
    x = 100,206.07

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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.