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Finding the Fourth Proportional to 170,126, 255,103.20 and 99,071.60

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Solution

The fourth proportional to 170,126, 255,103.20 and 99,071.60 is: 148,557.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,126 : 255,103.20 = 99,071.60 : x
  2. Step 2: Convert to fraction form
    170,126/255,103.20 = 99,071.60/x
  3. Step 3: Cross multiply
    170,126x = 255,103.20 × 99,071.60
  4. Step 4: Simplify right side
    170,126x = 25,273,482,189.12
  5. Step 5: Solve for x
    x = 25,273,482,189.12/170,126
  6. Step 6: Final answer
    x = 148,557.44

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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.