Home / 148,921.63-205,513.19-80,938.76

Finding the Fourth Proportional to 148,921.63, 205,513.19 and 80,938.76

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Solution

The fourth proportional to 148,921.63, 205,513.19 and 80,938.76 is: 111,696.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,921.63 : 205,513.19 = 80,938.76 : x
  2. Step 2: Convert to fraction form
    148,921.63/205,513.19 = 80,938.76/x
  3. Step 3: Cross multiply
    148,921.63x = 205,513.19 × 80,938.76
  4. Step 4: Simplify right side
    148,921.63x = 16,633,983,478.37
  5. Step 5: Solve for x
    x = 16,633,983,478.37/148,921.63
  6. Step 6: Final answer
    x = 111,696.22

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1.5x scale

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.