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Finding the Fourth Proportional to 120,051.60, 179,962.20 and 93,382.80

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Solution

The fourth proportional to 120,051.60, 179,962.20 and 93,382.80 is: 139,984.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,051.60 : 179,962.20 = 93,382.80 : x
  2. Step 2: Convert to fraction form
    120,051.60/179,962.20 = 93,382.80/x
  3. Step 3: Cross multiply
    120,051.60x = 179,962.20 × 93,382.80
  4. Step 4: Simplify right side
    120,051.60x = 16,805,374,130.16
  5. Step 5: Solve for x
    x = 16,805,374,130.16/120,051.60
  6. Step 6: Final answer
    x = 139,984.59

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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.