Home / 119,037.42-164,278.92-78,681.21

Finding the Fourth Proportional to 119,037.42, 164,278.92 and 78,681.21

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Solution

The fourth proportional to 119,037.42, 164,278.92 and 78,681.21 is: 108,584.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,037.42 : 164,278.92 = 78,681.21 : x
  2. Step 2: Convert to fraction form
    119,037.42/164,278.92 = 78,681.21/x
  3. Step 3: Cross multiply
    119,037.42x = 164,278.92 × 78,681.21
  4. Step 4: Simplify right side
    119,037.42x = 12,925,664,203.09
  5. Step 5: Solve for x
    x = 12,925,664,203.09/119,037.42
  6. Step 6: Final answer
    x = 108,584.88

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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.