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Finding the Fourth Proportional to 162,310.96, 223,973.13 and 90,689.41

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Solution

The fourth proportional to 162,310.96, 223,973.13 and 90,689.41 is: 125,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,310.96 : 223,973.13 = 90,689.41 : x
  2. Step 2: Convert to fraction form
    162,310.96/223,973.13 = 90,689.41/x
  3. Step 3: Cross multiply
    162,310.96x = 223,973.13 × 90,689.41
  4. Step 4: Simplify right side
    162,310.96x = 20,311,991,015.55
  5. Step 5: Solve for x
    x = 20,311,991,015.55/162,310.96
  6. Step 6: Final answer
    x = 125,142.45

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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.