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Finding the Fourth Proportional to 170,158.20, 255,513.78 and 87,214.20

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Solution

The fourth proportional to 170,158.20, 255,513.78 and 87,214.20 is: 130,963.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,158.20 : 255,513.78 = 87,214.20 : x
  2. Step 2: Convert to fraction form
    170,158.20/255,513.78 = 87,214.20/x
  3. Step 3: Cross multiply
    170,158.20x = 255,513.78 × 87,214.20
  4. Step 4: Simplify right side
    170,158.20x = 22,284,429,911.68
  5. Step 5: Solve for x
    x = 22,284,429,911.68/170,158.20
  6. Step 6: Final answer
    x = 130,963.01

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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.