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Finding the Fourth Proportional to 119,609.50, 165,068.68 and 65,894.62

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Solution

The fourth proportional to 119,609.50, 165,068.68 and 65,894.62 is: 90,938.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,609.50 : 165,068.68 = 65,894.62 : x
  2. Step 2: Convert to fraction form
    119,609.50/165,068.68 = 65,894.62/x
  3. Step 3: Cross multiply
    119,609.50x = 165,068.68 × 65,894.62
  4. Step 4: Simplify right side
    119,609.50x = 10,877,137,942.50
  5. Step 5: Solve for x
    x = 10,877,137,942.50/119,609.50
  6. Step 6: Final answer
    x = 90,938.75

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1.5x scale

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.