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Finding the Fourth Proportional to 162,188.70, 223,820.74 and 90,568.50

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Solution

The fourth proportional to 162,188.70, 223,820.74 and 90,568.50 is: 124,984.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,188.70 : 223,820.74 = 90,568.50 : x
  2. Step 2: Convert to fraction form
    162,188.70/223,820.74 = 90,568.50/x
  3. Step 3: Cross multiply
    162,188.70x = 223,820.74 × 90,568.50
  4. Step 4: Simplify right side
    162,188.70x = 20,271,108,690.69
  5. Step 5: Solve for x
    x = 20,271,108,690.69/162,188.70
  6. Step 6: Final answer
    x = 124,984.72

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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.