Home / 136,827.11-188,819.58-76,398.77

Finding the Fourth Proportional to 136,827.11, 188,819.58 and 76,398.77

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Solution

The fourth proportional to 136,827.11, 188,819.58 and 76,398.77 is: 105,429.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,827.11 : 188,819.58 = 76,398.77 : x
  2. Step 2: Convert to fraction form
    136,827.11/188,819.58 = 76,398.77/x
  3. Step 3: Cross multiply
    136,827.11x = 188,819.58 × 76,398.77
  4. Step 4: Simplify right side
    136,827.11x = 14,425,583,663.92
  5. Step 5: Solve for x
    x = 14,425,583,663.92/136,827.11
  6. Step 6: Final answer
    x = 105,429.28

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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.