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Finding the Fourth Proportional to 119,679.64, 165,315.66 and 89,412.37

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Solution

The fourth proportional to 119,679.64, 165,315.66 and 89,412.37 is: 123,506.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,679.64 : 165,315.66 = 89,412.37 : x
  2. Step 2: Convert to fraction form
    119,679.64/165,315.66 = 89,412.37/x
  3. Step 3: Cross multiply
    119,679.64x = 165,315.66 × 89,412.37
  4. Step 4: Simplify right side
    119,679.64x = 14,781,264,958.71
  5. Step 5: Solve for x
    x = 14,781,264,958.71/119,679.64
  6. Step 6: Final answer
    x = 123,506.93

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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.