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Finding the Fourth Proportional to 109,008.80, 163,513.20 and 102,885.20

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Solution

The fourth proportional to 109,008.80, 163,513.20 and 102,885.20 is: 154,327.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,008.80 : 163,513.20 = 102,885.20 : x
  2. Step 2: Convert to fraction form
    109,008.80/163,513.20 = 102,885.20/x
  3. Step 3: Cross multiply
    109,008.80x = 163,513.20 × 102,885.20
  4. Step 4: Simplify right side
    109,008.80x = 16,823,088,284.64
  5. Step 5: Solve for x
    x = 16,823,088,284.64/109,008.80
  6. Step 6: Final answer
    x = 154,327.80

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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.