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Finding the Fourth Proportional to 119,881.34, 165,424.47 and 66,162.89

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Solution

The fourth proportional to 119,881.34, 165,424.47 and 66,162.89 is: 91,298.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,881.34 : 165,424.47 = 66,162.89 : x
  2. Step 2: Convert to fraction form
    119,881.34/165,424.47 = 66,162.89/x
  3. Step 3: Cross multiply
    119,881.34x = 165,424.47 × 66,162.89
  4. Step 4: Simplify right side
    119,881.34x = 10,944,960,184.80
  5. Step 5: Solve for x
    x = 10,944,960,184.80/119,881.34
  6. Step 6: Final answer
    x = 91,298.28

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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.