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Finding the Fourth Proportional to 109,410.90, 164,116.35 and 100,857.30

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Solution

The fourth proportional to 109,410.90, 164,116.35 and 100,857.30 is: 151,285.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,410.90 : 164,116.35 = 100,857.30 : x
  2. Step 2: Convert to fraction form
    109,410.90/164,116.35 = 100,857.30/x
  3. Step 3: Cross multiply
    109,410.90x = 164,116.35 × 100,857.30
  4. Step 4: Simplify right side
    109,410.90x = 16,552,331,946.86
  5. Step 5: Solve for x
    x = 16,552,331,946.86/109,410.90
  6. Step 6: Final answer
    x = 151,285.95

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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.