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Finding the Fourth Proportional to 179,323.80, 268,985.70 and 61,128.60

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Solution

The fourth proportional to 179,323.80, 268,985.70 and 61,128.60 is: 91,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,323.80 : 268,985.70 = 61,128.60 : x
  2. Step 2: Convert to fraction form
    179,323.80/268,985.70 = 61,128.60/x
  3. Step 3: Cross multiply
    179,323.80x = 268,985.70 × 61,128.60
  4. Step 4: Simplify right side
    179,323.80x = 16,442,719,261.02
  5. Step 5: Solve for x
    x = 16,442,719,261.02/179,323.80
  6. Step 6: Final answer
    x = 91,692.90

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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.