Home / 438,626.61-657,963.09-123,108.12

Finding the Fourth Proportional to 438,626.61, 657,963.09 and 123,108.12

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Solution

The fourth proportional to 438,626.61, 657,963.09 and 123,108.12 is: 184,668.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,626.61 : 657,963.09 = 123,108.12 : x
  2. Step 2: Convert to fraction form
    438,626.61/657,963.09 = 123,108.12/x
  3. Step 3: Cross multiply
    438,626.61x = 657,963.09 × 123,108.12
  4. Step 4: Simplify right side
    438,626.61x = 81,000,599,039.29
  5. Step 5: Solve for x
    x = 81,000,599,039.29/438,626.61
  6. Step 6: Final answer
    x = 184,668.68

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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.