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Finding the Fourth Proportional to 122,490.60, 183,692.70 and 43,607.40

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Solution

The fourth proportional to 122,490.60, 183,692.70 and 43,607.40 is: 65,395.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,490.60 : 183,692.70 = 43,607.40 : x
  2. Step 2: Convert to fraction form
    122,490.60/183,692.70 = 43,607.40/x
  3. Step 3: Cross multiply
    122,490.60x = 183,692.70 × 43,607.40
  4. Step 4: Simplify right side
    122,490.60x = 8,010,361,045.98
  5. Step 5: Solve for x
    x = 8,010,361,045.98/122,490.60
  6. Step 6: Final answer
    x = 65,395.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.