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Finding the Fourth Proportional to 119,420.58, 164,868.66 and 79,189.02

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Solution

The fourth proportional to 119,420.58, 164,868.66 and 79,189.02 is: 109,326.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,420.58 : 164,868.66 = 79,189.02 : x
  2. Step 2: Convert to fraction form
    119,420.58/164,868.66 = 79,189.02/x
  3. Step 3: Cross multiply
    119,420.58x = 164,868.66 × 79,189.02
  4. Step 4: Simplify right side
    119,420.58x = 13,055,787,614.11
  5. Step 5: Solve for x
    x = 13,055,787,614.11/119,420.58
  6. Step 6: Final answer
    x = 109,326.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.