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Finding the Fourth Proportional to 162,309.51, 223,982.96 and 90,690.12

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Solution

The fourth proportional to 162,309.51, 223,982.96 and 90,690.12 is: 125,150.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,309.51 : 223,982.96 = 90,690.12 : x
  2. Step 2: Convert to fraction form
    162,309.51/223,982.96 = 90,690.12/x
  3. Step 3: Cross multiply
    162,309.51x = 223,982.96 × 90,690.12
  4. Step 4: Simplify right side
    162,309.51x = 20,313,041,066.90
  5. Step 5: Solve for x
    x = 20,313,041,066.90/162,309.51
  6. Step 6: Final answer
    x = 125,150.04

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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.