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Finding the Fourth Proportional to 162,543.80, 243,621.30 and 83,617.40

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Solution

The fourth proportional to 162,543.80, 243,621.30 and 83,617.40 is: 125,326.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,543.80 : 243,621.30 = 83,617.40 : x
  2. Step 2: Convert to fraction form
    162,543.80/243,621.30 = 83,617.40/x
  3. Step 3: Cross multiply
    162,543.80x = 243,621.30 × 83,617.40
  4. Step 4: Simplify right side
    162,543.80x = 20,370,979,690.62
  5. Step 5: Solve for x
    x = 20,370,979,690.62/162,543.80
  6. Step 6: Final answer
    x = 125,326.09

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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.