Home / 123,420.89-185,137.68-34,681.32

Finding the Fourth Proportional to 123,420.89, 185,137.68 and 34,681.32

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Solution

The fourth proportional to 123,420.89, 185,137.68 and 34,681.32 is: 52,023.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,420.89 : 185,137.68 = 34,681.32 : x
  2. Step 2: Convert to fraction form
    123,420.89/185,137.68 = 34,681.32/x
  3. Step 3: Cross multiply
    123,420.89x = 185,137.68 × 34,681.32
  4. Step 4: Simplify right side
    123,420.89x = 6,420,819,124.14
  5. Step 5: Solve for x
    x = 6,420,819,124.14/123,420.89
  6. Step 6: Final answer
    x = 52,023.76

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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.