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Finding the Fourth Proportional to 133,237.84, 183,870.62 and 72,811.03

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Solution

The fourth proportional to 133,237.84, 183,870.62 and 72,811.03 is: 100,480.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,237.84 : 183,870.62 = 72,811.03 : x
  2. Step 2: Convert to fraction form
    133,237.84/183,870.62 = 72,811.03/x
  3. Step 3: Cross multiply
    133,237.84x = 183,870.62 × 72,811.03
  4. Step 4: Simplify right side
    133,237.84x = 13,387,808,608.26
  5. Step 5: Solve for x
    x = 13,387,808,608.26/133,237.84
  6. Step 6: Final answer
    x = 100,480.53

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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.