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Finding the Fourth Proportional to 155,175.50, 214,142.20 and 88,107.50

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Solution

The fourth proportional to 155,175.50, 214,142.20 and 88,107.50 is: 121,588.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,175.50 : 214,142.20 = 88,107.50 : x
  2. Step 2: Convert to fraction form
    155,175.50/214,142.20 = 88,107.50/x
  3. Step 3: Cross multiply
    155,175.50x = 214,142.20 × 88,107.50
  4. Step 4: Simplify right side
    155,175.50x = 18,867,533,886.50
  5. Step 5: Solve for x
    x = 18,867,533,886.50/155,175.50
  6. Step 6: Final answer
    x = 121,588.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.