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Finding the Fourth Proportional to 156,775.80, 235,163.70 and 51,605.40

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Solution

The fourth proportional to 156,775.80, 235,163.70 and 51,605.40 is: 77,408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,775.80 : 235,163.70 = 51,605.40 : x
  2. Step 2: Convert to fraction form
    156,775.80/235,163.70 = 51,605.40/x
  3. Step 3: Cross multiply
    156,775.80x = 235,163.70 × 51,605.40
  4. Step 4: Simplify right side
    156,775.80x = 12,135,716,803.98
  5. Step 5: Solve for x
    x = 12,135,716,803.98/156,775.80
  6. Step 6: Final answer
    x = 77,408.10

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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.