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Finding the Fourth Proportional to 162,309.49, 223,997.60 and 90,689.90

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Solution

The fourth proportional to 162,309.49, 223,997.60 and 90,689.90 is: 125,157.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,309.49 : 223,997.60 = 90,689.90 : x
  2. Step 2: Convert to fraction form
    162,309.49/223,997.60 = 90,689.90/x
  3. Step 3: Cross multiply
    162,309.49x = 223,997.60 × 90,689.90
  4. Step 4: Simplify right side
    162,309.49x = 20,314,319,050.98
  5. Step 5: Solve for x
    x = 20,314,319,050.98/162,309.49
  6. Step 6: Final answer
    x = 125,157.93

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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.