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Finding the Fourth Proportional to 133,116.70, 183,708.51 and 72,692.98

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Solution

The fourth proportional to 133,116.70, 183,708.51 and 72,692.98 is: 100,320.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,116.70 : 183,708.51 = 72,692.98 : x
  2. Step 2: Convert to fraction form
    133,116.70/183,708.51 = 72,692.98/x
  3. Step 3: Cross multiply
    133,116.70x = 183,708.51 × 72,692.98
  4. Step 4: Simplify right side
    133,116.70x = 13,354,319,043.26
  5. Step 5: Solve for x
    x = 13,354,319,043.26/133,116.70
  6. Step 6: Final answer
    x = 100,320.39

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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.