Home / 102,890.70-154,664.10-96,985.80

Finding the Fourth Proportional to 102,890.70, 154,664.10 and 96,985.80

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Solution

The fourth proportional to 102,890.70, 154,664.10 and 96,985.80 is: 145,787.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,890.70 : 154,664.10 = 96,985.80 : x
  2. Step 2: Convert to fraction form
    102,890.70/154,664.10 = 96,985.80/x
  3. Step 3: Cross multiply
    102,890.70x = 154,664.10 × 96,985.80
  4. Step 4: Simplify right side
    102,890.70x = 15,000,221,469.78
  5. Step 5: Solve for x
    x = 15,000,221,469.78/102,890.70
  6. Step 6: Final answer
    x = 145,787.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.