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Finding the Fourth Proportional to 156,803.60, 234,629.40 and 115,331.60

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Solution

The fourth proportional to 156,803.60, 234,629.40 and 115,331.60 is: 172,573.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,803.60 : 234,629.40 = 115,331.60 : x
  2. Step 2: Convert to fraction form
    156,803.60/234,629.40 = 115,331.60/x
  3. Step 3: Cross multiply
    156,803.60x = 234,629.40 × 115,331.60
  4. Step 4: Simplify right side
    156,803.60x = 27,060,184,109.04
  5. Step 5: Solve for x
    x = 27,060,184,109.04/156,803.60
  6. Step 6: Final answer
    x = 172,573.74

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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.