Home / 123,187.86-169,970.13-74,788.56

Finding the Fourth Proportional to 123,187.86, 169,970.13 and 74,788.56

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Solution

The fourth proportional to 123,187.86, 169,970.13 and 74,788.56 is: 103,190.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,187.86 : 169,970.13 = 74,788.56 : x
  2. Step 2: Convert to fraction form
    123,187.86/169,970.13 = 74,788.56/x
  3. Step 3: Cross multiply
    123,187.86x = 169,970.13 × 74,788.56
  4. Step 4: Simplify right side
    123,187.86x = 12,711,821,265.71
  5. Step 5: Solve for x
    x = 12,711,821,265.71/123,187.86
  6. Step 6: Final answer
    x = 103,190.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.