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Finding the Fourth Proportional to 162,162.60, 242,587.80 and 142,479.60

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Solution

The fourth proportional to 162,162.60, 242,587.80 and 142,479.60 is: 213,142.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,162.60 : 242,587.80 = 142,479.60 : x
  2. Step 2: Convert to fraction form
    162,162.60/242,587.80 = 142,479.60/x
  3. Step 3: Cross multiply
    162,162.60x = 242,587.80 × 142,479.60
  4. Step 4: Simplify right side
    162,162.60x = 34,563,812,708.88
  5. Step 5: Solve for x
    x = 34,563,812,708.88/162,162.60
  6. Step 6: Final answer
    x = 213,142.94

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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.