Home / 121,983.78-183,185.07-74,875.50

Finding the Fourth Proportional to 121,983.78, 183,185.07 and 74,875.50

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Solution

The fourth proportional to 121,983.78, 183,185.07 and 74,875.50 is: 112,441.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,983.78 : 183,185.07 = 74,875.50 : x
  2. Step 2: Convert to fraction form
    121,983.78/183,185.07 = 74,875.50/x
  3. Step 3: Cross multiply
    121,983.78x = 183,185.07 × 74,875.50
  4. Step 4: Simplify right side
    121,983.78x = 13,716,073,708.79
  5. Step 5: Solve for x
    x = 13,716,073,708.79/121,983.78
  6. Step 6: Final answer
    x = 112,441.78

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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.