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Finding the Fourth Proportional to 162,265, 223,925.70 and 91,609

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Solution

The fourth proportional to 162,265, 223,925.70 and 91,609 is: 126,420.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,265 : 223,925.70 = 91,609 : x
  2. Step 2: Convert to fraction form
    162,265/223,925.70 = 91,609/x
  3. Step 3: Cross multiply
    162,265x = 223,925.70 × 91,609
  4. Step 4: Simplify right side
    162,265x = 20,513,609,451.30
  5. Step 5: Solve for x
    x = 20,513,609,451.30/162,265
  6. Step 6: Final answer
    x = 126,420.42

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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.