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Finding the Fourth Proportional to 109,008.70, 163,513.05 and 103,176.70

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Solution

The fourth proportional to 109,008.70, 163,513.05 and 103,176.70 is: 154,765.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,008.70 : 163,513.05 = 103,176.70 : x
  2. Step 2: Convert to fraction form
    109,008.70/163,513.05 = 103,176.70/x
  3. Step 3: Cross multiply
    109,008.70x = 163,513.05 × 103,176.70
  4. Step 4: Simplify right side
    109,008.70x = 16,870,736,905.94
  5. Step 5: Solve for x
    x = 16,870,736,905.94/109,008.70
  6. Step 6: Final answer
    x = 154,765.05

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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.