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Finding the Fourth Proportional to 119,612.55, 165,072.75 and 65,897.55

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Solution

The fourth proportional to 119,612.55, 165,072.75 and 65,897.55 is: 90,942.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,612.55 : 165,072.75 = 65,897.55 : x
  2. Step 2: Convert to fraction form
    119,612.55/165,072.75 = 65,897.55/x
  3. Step 3: Cross multiply
    119,612.55x = 165,072.75 × 65,897.55
  4. Step 4: Simplify right side
    119,612.55x = 10,877,889,796.76
  5. Step 5: Solve for x
    x = 10,877,889,796.76/119,612.55
  6. Step 6: Final answer
    x = 90,942.71

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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.