Home / 148,509.24-204,943.02-81,441.72

Finding the Fourth Proportional to 148,509.24, 204,943.02 and 81,441.72

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Solution

The fourth proportional to 148,509.24, 204,943.02 and 81,441.72 is: 112,389.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,509.24 : 204,943.02 = 81,441.72 : x
  2. Step 2: Convert to fraction form
    148,509.24/204,943.02 = 81,441.72/x
  3. Step 3: Cross multiply
    148,509.24x = 204,943.02 × 81,441.72
  4. Step 4: Simplify right side
    148,509.24x = 16,690,912,050.79
  5. Step 5: Solve for x
    x = 16,690,912,050.79/148,509.24
  6. Step 6: Final answer
    x = 112,389.72

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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.