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Finding the Fourth Proportional to 119,974.80, 179,962.20 and 70,111.20

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Solution

The fourth proportional to 119,974.80, 179,962.20 and 70,111.20 is: 105,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,974.80 : 179,962.20 = 70,111.20 : x
  2. Step 2: Convert to fraction form
    119,974.80/179,962.20 = 70,111.20/x
  3. Step 3: Cross multiply
    119,974.80x = 179,962.20 × 70,111.20
  4. Step 4: Simplify right side
    119,974.80x = 12,617,365,796.64
  5. Step 5: Solve for x
    x = 12,617,365,796.64/119,974.80
  6. Step 6: Final answer
    x = 105,166.80

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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.