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Finding the Fourth Proportional to 119,719, 179,579.40 and 53,141.23

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Solution

The fourth proportional to 119,719, 179,579.40 and 53,141.23 is: 79,712.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,719 : 179,579.40 = 53,141.23 : x
  2. Step 2: Convert to fraction form
    119,719/179,579.40 = 53,141.23/x
  3. Step 3: Cross multiply
    119,719x = 179,579.40 × 53,141.23
  4. Step 4: Simplify right side
    119,719x = 9,543,070,198.66
  5. Step 5: Solve for x
    x = 9,543,070,198.66/119,719
  6. Step 6: Final answer
    x = 79,712.24

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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.