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Finding the Fourth Proportional to 133,116.57, 183,701.76 and 72,687.63

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Solution

The fourth proportional to 133,116.57, 183,701.76 and 72,687.63 is: 100,309.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,116.57 : 183,701.76 = 72,687.63 : x
  2. Step 2: Convert to fraction form
    133,116.57/183,701.76 = 72,687.63/x
  3. Step 3: Cross multiply
    133,116.57x = 183,701.76 × 72,687.63
  4. Step 4: Simplify right side
    133,116.57x = 13,352,845,977.53
  5. Step 5: Solve for x
    x = 13,352,845,977.53/133,116.57
  6. Step 6: Final answer
    x = 100,309.42

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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.