Home / 109,731.80-164,792.10-84,832.40

Finding the Fourth Proportional to 109,731.80, 164,792.10 and 84,832.40

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Solution

The fourth proportional to 109,731.80, 164,792.10 and 84,832.40 is: 127,398.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,731.80 : 164,792.10 = 84,832.40 : x
  2. Step 2: Convert to fraction form
    109,731.80/164,792.10 = 84,832.40/x
  3. Step 3: Cross multiply
    109,731.80x = 164,792.10 × 84,832.40
  4. Step 4: Simplify right side
    109,731.80x = 13,979,709,344.04
  5. Step 5: Solve for x
    x = 13,979,709,344.04/109,731.80
  6. Step 6: Final answer
    x = 127,398.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.