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Finding the Fourth Proportional to 162,002.80, 243,004.20 and 102,880.90

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Solution

The fourth proportional to 162,002.80, 243,004.20 and 102,880.90 is: 154,321.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,002.80 : 243,004.20 = 102,880.90 : x
  2. Step 2: Convert to fraction form
    162,002.80/243,004.20 = 102,880.90/x
  3. Step 3: Cross multiply
    162,002.80x = 243,004.20 × 102,880.90
  4. Step 4: Simplify right side
    162,002.80x = 25,000,490,799.78
  5. Step 5: Solve for x
    x = 25,000,490,799.78/162,002.80
  6. Step 6: Final answer
    x = 154,321.35

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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.