Home / 128,681.86-193,244.24-123,146.04

Finding the Fourth Proportional to 128,681.86, 193,244.24 and 123,146.04

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Solution

The fourth proportional to 128,681.86, 193,244.24 and 123,146.04 is: 184,930.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,681.86 : 193,244.24 = 123,146.04 : x
  2. Step 2: Convert to fraction form
    128,681.86/193,244.24 = 123,146.04/x
  3. Step 3: Cross multiply
    128,681.86x = 193,244.24 × 123,146.04
  4. Step 4: Simplify right side
    128,681.86x = 23,797,262,908.81
  5. Step 5: Solve for x
    x = 23,797,262,908.81/128,681.86
  6. Step 6: Final answer
    x = 184,930.98

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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.