Home / 156,635.60-235,026.30-81,840.20

Finding the Fourth Proportional to 156,635.60, 235,026.30 and 81,840.20

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Solution

The fourth proportional to 156,635.60, 235,026.30 and 81,840.20 is: 122,798.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,635.60 : 235,026.30 = 81,840.20 : x
  2. Step 2: Convert to fraction form
    156,635.60/235,026.30 = 81,840.20/x
  3. Step 3: Cross multiply
    156,635.60x = 235,026.30 × 81,840.20
  4. Step 4: Simplify right side
    156,635.60x = 19,234,599,397.26
  5. Step 5: Solve for x
    x = 19,234,599,397.26/156,635.60
  6. Step 6: Final answer
    x = 122,798.39

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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.