Home / 119,226.79-164,420.20-78,318.71

Finding the Fourth Proportional to 119,226.79, 164,420.20 and 78,318.71

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Solution

The fourth proportional to 119,226.79, 164,420.20 and 78,318.71 is: 108,005.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,226.79 : 164,420.20 = 78,318.71 : x
  2. Step 2: Convert to fraction form
    119,226.79/164,420.20 = 78,318.71/x
  3. Step 3: Cross multiply
    119,226.79x = 164,420.20 × 78,318.71
  4. Step 4: Simplify right side
    119,226.79x = 12,877,177,961.94
  5. Step 5: Solve for x
    x = 12,877,177,961.94/119,226.79
  6. Step 6: Final answer
    x = 108,005.74

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1.5x scale

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.