Home / 102,981.19-142,107.16-57,651.52

Finding the Fourth Proportional to 102,981.19, 142,107.16 and 57,651.52

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Solution

The fourth proportional to 102,981.19, 142,107.16 and 57,651.52 is: 79,555.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,981.19 : 142,107.16 = 57,651.52 : x
  2. Step 2: Convert to fraction form
    102,981.19/142,107.16 = 57,651.52/x
  3. Step 3: Cross multiply
    102,981.19x = 142,107.16 × 57,651.52
  4. Step 4: Simplify right side
    102,981.19x = 8,192,693,776.88
  5. Step 5: Solve for x
    x = 8,192,693,776.88/102,981.19
  6. Step 6: Final answer
    x = 79,555.24

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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.