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Finding the Fourth Proportional to 123,641.45, 185,460.17 and 39,400.48

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Solution

The fourth proportional to 123,641.45, 185,460.17 and 39,400.48 is: 59,100.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,641.45 : 185,460.17 = 39,400.48 : x
  2. Step 2: Convert to fraction form
    123,641.45/185,460.17 = 39,400.48/x
  3. Step 3: Cross multiply
    123,641.45x = 185,460.17 × 39,400.48
  4. Step 4: Simplify right side
    123,641.45x = 7,307,218,710.49
  5. Step 5: Solve for x
    x = 7,307,218,710.49/123,641.45
  6. Step 6: Final answer
    x = 59,100.07

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1.5x scale

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.