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Finding the Fourth Proportional to 139,114.68, 208,701.72 and 56,008.68

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Solution

The fourth proportional to 139,114.68, 208,701.72 and 56,008.68 is: 84,024.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,114.68 : 208,701.72 = 56,008.68 : x
  2. Step 2: Convert to fraction form
    139,114.68/208,701.72 = 56,008.68/x
  3. Step 3: Cross multiply
    139,114.68x = 208,701.72 × 56,008.68
  4. Step 4: Simplify right side
    139,114.68x = 11,689,107,850.93
  5. Step 5: Solve for x
    x = 11,689,107,850.93/139,114.68
  6. Step 6: Final answer
    x = 84,024.98

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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.