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Finding the Fourth Proportional to 123,762.99, 185,614.73 and 57,139.11

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Solution

The fourth proportional to 123,762.99, 185,614.73 and 57,139.11 is: 85,694.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,762.99 : 185,614.73 = 57,139.11 : x
  2. Step 2: Convert to fraction form
    123,762.99/185,614.73 = 57,139.11/x
  3. Step 3: Cross multiply
    123,762.99x = 185,614.73 × 57,139.11
  4. Step 4: Simplify right side
    123,762.99x = 10,605,860,189.39
  5. Step 5: Solve for x
    x = 10,605,860,189.39/123,762.99
  6. Step 6: Final answer
    x = 85,694.93

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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.