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Finding the Fourth Proportional to 156,779.05, 235,100.54 and 56,906.05

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Solution

The fourth proportional to 156,779.05, 235,100.54 and 56,906.05 is: 85,334.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,779.05 : 235,100.54 = 56,906.05 : x
  2. Step 2: Convert to fraction form
    156,779.05/235,100.54 = 56,906.05/x
  3. Step 3: Cross multiply
    156,779.05x = 235,100.54 × 56,906.05
  4. Step 4: Simplify right side
    156,779.05x = 13,378,642,799.74
  5. Step 5: Solve for x
    x = 13,378,642,799.74/156,779.05
  6. Step 6: Final answer
    x = 85,334.38

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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.