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Finding the Fourth Proportional to 156,627.60, 234,984.60 and 77,744.40

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Solution

The fourth proportional to 156,627.60, 234,984.60 and 77,744.40 is: 116,638.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,627.60 : 234,984.60 = 77,744.40 : x
  2. Step 2: Convert to fraction form
    156,627.60/234,984.60 = 77,744.40/x
  3. Step 3: Cross multiply
    156,627.60x = 234,984.60 × 77,744.40
  4. Step 4: Simplify right side
    156,627.60x = 18,268,736,736.24
  5. Step 5: Solve for x
    x = 18,268,736,736.24/156,627.60
  6. Step 6: Final answer
    x = 116,638.04

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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.