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Finding the Fourth Proportional to 191,722.40, 287,583.60 and 108,778.40

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Solution

The fourth proportional to 191,722.40, 287,583.60 and 108,778.40 is: 163,167.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,722.40 : 287,583.60 = 108,778.40 : x
  2. Step 2: Convert to fraction form
    191,722.40/287,583.60 = 108,778.40/x
  3. Step 3: Cross multiply
    191,722.40x = 287,583.60 × 108,778.40
  4. Step 4: Simplify right side
    191,722.40x = 31,282,883,874.24
  5. Step 5: Solve for x
    x = 31,282,883,874.24/191,722.40
  6. Step 6: Final answer
    x = 163,167.60

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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.