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Finding the Fourth Proportional to 156,745.70, 235,118.55 and 51,539.30

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Solution

The fourth proportional to 156,745.70, 235,118.55 and 51,539.30 is: 77,308.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,745.70 : 235,118.55 = 51,539.30 : x
  2. Step 2: Convert to fraction form
    156,745.70/235,118.55 = 51,539.30/x
  3. Step 3: Cross multiply
    156,745.70x = 235,118.55 × 51,539.30
  4. Step 4: Simplify right side
    156,745.70x = 12,117,845,484.02
  5. Step 5: Solve for x
    x = 12,117,845,484.02/156,745.70
  6. Step 6: Final answer
    x = 77,308.95

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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.