Home / 111,763.24-154,107.30-81,495.16

Finding the Fourth Proportional to 111,763.24, 154,107.30 and 81,495.16

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Solution

The fourth proportional to 111,763.24, 154,107.30 and 81,495.16 is: 112,371.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,763.24 : 154,107.30 = 81,495.16 : x
  2. Step 2: Convert to fraction form
    111,763.24/154,107.30 = 81,495.16/x
  3. Step 3: Cross multiply
    111,763.24x = 154,107.30 × 81,495.16
  4. Step 4: Simplify right side
    111,763.24x = 12,558,999,070.67
  5. Step 5: Solve for x
    x = 12,558,999,070.67/111,763.24
  6. Step 6: Final answer
    x = 112,371.47

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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.