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Finding the Fourth Proportional to 104,409.60, 156,614.40 and 60,172.80

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Solution

The fourth proportional to 104,409.60, 156,614.40 and 60,172.80 is: 90,259.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,409.60 : 156,614.40 = 60,172.80 : x
  2. Step 2: Convert to fraction form
    104,409.60/156,614.40 = 60,172.80/x
  3. Step 3: Cross multiply
    104,409.60x = 156,614.40 × 60,172.80
  4. Step 4: Simplify right side
    104,409.60x = 9,423,926,968.32
  5. Step 5: Solve for x
    x = 9,423,926,968.32/104,409.60
  6. Step 6: Final answer
    x = 90,259.20

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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.