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Finding the Fourth Proportional to 119,931, 165,519.36 and 69,630

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Solution

The fourth proportional to 119,931, 165,519.36 and 69,630 is: 96,097.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,931 : 165,519.36 = 69,630 : x
  2. Step 2: Convert to fraction form
    119,931/165,519.36 = 69,630/x
  3. Step 3: Cross multiply
    119,931x = 165,519.36 × 69,630
  4. Step 4: Simplify right side
    119,931x = 11,525,113,036.80
  5. Step 5: Solve for x
    x = 11,525,113,036.80/119,931
  6. Step 6: Final answer
    x = 96,097.86

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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.