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Finding the Fourth Proportional to 162,802.80, 243,815.40 and 99,817.20

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Solution

The fourth proportional to 162,802.80, 243,815.40 and 99,817.20 is: 149,487.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,802.80 : 243,815.40 = 99,817.20 : x
  2. Step 2: Convert to fraction form
    162,802.80/243,815.40 = 99,817.20/x
  3. Step 3: Cross multiply
    162,802.80x = 243,815.40 × 99,817.20
  4. Step 4: Simplify right side
    162,802.80x = 24,336,970,544.88
  5. Step 5: Solve for x
    x = 24,336,970,544.88/162,802.80
  6. Step 6: Final answer
    x = 149,487.42

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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.