Home / 148,938.21-205,535.61-80,955.72

Finding the Fourth Proportional to 148,938.21, 205,535.61 and 80,955.72

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Solution

The fourth proportional to 148,938.21, 205,535.61 and 80,955.72 is: 111,719.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,938.21 : 205,535.61 = 80,955.72 : x
  2. Step 2: Convert to fraction form
    148,938.21/205,535.61 = 80,955.72/x
  3. Step 3: Cross multiply
    148,938.21x = 205,535.61 × 80,955.72
  4. Step 4: Simplify right side
    148,938.21x = 16,639,283,293.19
  5. Step 5: Solve for x
    x = 16,639,283,293.19/148,938.21
  6. Step 6: Final answer
    x = 111,719.37

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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.