Home / 162,012.20-243,018.30-90,861.80

Finding the Fourth Proportional to 162,012.20, 243,018.30 and 90,861.80

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Solution

The fourth proportional to 162,012.20, 243,018.30 and 90,861.80 is: 136,292.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,012.20 : 243,018.30 = 90,861.80 : x
  2. Step 2: Convert to fraction form
    162,012.20/243,018.30 = 90,861.80/x
  3. Step 3: Cross multiply
    162,012.20x = 243,018.30 × 90,861.80
  4. Step 4: Simplify right side
    162,012.20x = 22,081,080,170.94
  5. Step 5: Solve for x
    x = 22,081,080,170.94/162,012.20
  6. Step 6: Final answer
    x = 136,292.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.