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Finding the Fourth Proportional to 101,172.20, 151,412.70 and 88,730.60

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Solution

The fourth proportional to 101,172.20, 151,412.70 and 88,730.60 is: 132,792.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,172.20 : 151,412.70 = 88,730.60 : x
  2. Step 2: Convert to fraction form
    101,172.20/151,412.70 = 88,730.60/x
  3. Step 3: Cross multiply
    101,172.20x = 151,412.70 × 88,730.60
  4. Step 4: Simplify right side
    101,172.20x = 13,434,939,718.62
  5. Step 5: Solve for x
    x = 13,434,939,718.62/101,172.20
  6. Step 6: Final answer
    x = 132,792.80

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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.