Home / 148,508.16-204,940.96-81,440

Finding the Fourth Proportional to 148,508.16, 204,940.96 and 81,440

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Solution

The fourth proportional to 148,508.16, 204,940.96 and 81,440 is: 112,387.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,508.16 : 204,940.96 = 81,440 : x
  2. Step 2: Convert to fraction form
    148,508.16/204,940.96 = 81,440/x
  3. Step 3: Cross multiply
    148,508.16x = 204,940.96 × 81,440
  4. Step 4: Simplify right side
    148,508.16x = 16,690,391,782.40
  5. Step 5: Solve for x
    x = 16,690,391,782.40/148,508.16
  6. Step 6: Final answer
    x = 112,387.04

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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.