Home / 219,787.95-303,220.65-138,068.18

Finding the Fourth Proportional to 219,787.95, 303,220.65 and 138,068.18

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Solution

The fourth proportional to 219,787.95, 303,220.65 and 138,068.18 is: 190,479.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,787.95 : 303,220.65 = 138,068.18 : x
  2. Step 2: Convert to fraction form
    219,787.95/303,220.65 = 138,068.18/x
  3. Step 3: Cross multiply
    219,787.95x = 303,220.65 × 138,068.18
  4. Step 4: Simplify right side
    219,787.95x = 41,865,123,283.92
  5. Step 5: Solve for x
    x = 41,865,123,283.92/219,787.95
  6. Step 6: Final answer
    x = 190,479.61

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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.