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Finding the Fourth Proportional to 162,761.40, 224,605.50 and 90,161.30

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Solution

The fourth proportional to 162,761.40, 224,605.50 and 90,161.30 is: 124,419.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,761.40 : 224,605.50 = 90,161.30 : x
  2. Step 2: Convert to fraction form
    162,761.40/224,605.50 = 90,161.30/x
  3. Step 3: Cross multiply
    162,761.40x = 224,605.50 × 90,161.30
  4. Step 4: Simplify right side
    162,761.40x = 20,250,723,867.15
  5. Step 5: Solve for x
    x = 20,250,723,867.15/162,761.40
  6. Step 6: Final answer
    x = 124,419.70

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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.