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Finding the Fourth Proportional to 162,649.80, 243,780.30 and 83,723.40

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Solution

The fourth proportional to 162,649.80, 243,780.30 and 83,723.40 is: 125,485.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,649.80 : 243,780.30 = 83,723.40 : x
  2. Step 2: Convert to fraction form
    162,649.80/243,780.30 = 83,723.40/x
  3. Step 3: Cross multiply
    162,649.80x = 243,780.30 × 83,723.40
  4. Step 4: Simplify right side
    162,649.80x = 20,410,115,569.02
  5. Step 5: Solve for x
    x = 20,410,115,569.02/162,649.80
  6. Step 6: Final answer
    x = 125,485.03

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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.