Home / 148,915.79-205,505.38-80,932.76

Finding the Fourth Proportional to 148,915.79, 205,505.38 and 80,932.76

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Solution

The fourth proportional to 148,915.79, 205,505.38 and 80,932.76 is: 111,688.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,915.79 : 205,505.38 = 80,932.76 : x
  2. Step 2: Convert to fraction form
    148,915.79/205,505.38 = 80,932.76/x
  3. Step 3: Cross multiply
    148,915.79x = 205,505.38 × 80,932.76
  4. Step 4: Simplify right side
    148,915.79x = 16,632,117,598.25
  5. Step 5: Solve for x
    x = 16,632,117,598.25/148,915.79
  6. Step 6: Final answer
    x = 111,688.07

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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.