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Finding the Fourth Proportional to 162,001.20, 242,915.40 and 68,401.20

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Solution

The fourth proportional to 162,001.20, 242,915.40 and 68,401.20 is: 102,565.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,001.20 : 242,915.40 = 68,401.20 : x
  2. Step 2: Convert to fraction form
    162,001.20/242,915.40 = 68,401.20/x
  3. Step 3: Cross multiply
    162,001.20x = 242,915.40 × 68,401.20
  4. Step 4: Simplify right side
    162,001.20x = 16,615,704,858.48
  5. Step 5: Solve for x
    x = 16,615,704,858.48/162,001.20
  6. Step 6: Final answer
    x = 102,565.32

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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.