Home / 151,787.84-209,479.20-88,145.60

Finding the Fourth Proportional to 151,787.84, 209,479.20 and 88,145.60

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Solution

The fourth proportional to 151,787.84, 209,479.20 and 88,145.60 is: 121,647.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,787.84 : 209,479.20 = 88,145.60 : x
  2. Step 2: Convert to fraction form
    151,787.84/209,479.20 = 88,145.60/x
  3. Step 3: Cross multiply
    151,787.84x = 209,479.20 × 88,145.60
  4. Step 4: Simplify right side
    151,787.84x = 18,464,669,771.52
  5. Step 5: Solve for x
    x = 18,464,669,771.52/151,787.84
  6. Step 6: Final answer
    x = 121,647.89

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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.