Home / 102,943.35-154,420.54-31,915.06

Finding the Fourth Proportional to 102,943.35, 154,420.54 and 31,915.06

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Solution

The fourth proportional to 102,943.35, 154,420.54 and 31,915.06 is: 47,874.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,943.35 : 154,420.54 = 31,915.06 : x
  2. Step 2: Convert to fraction form
    102,943.35/154,420.54 = 31,915.06/x
  3. Step 3: Cross multiply
    102,943.35x = 154,420.54 × 31,915.06
  4. Step 4: Simplify right side
    102,943.35x = 4,928,340,333.49
  5. Step 5: Solve for x
    x = 4,928,340,333.49/102,943.35
  6. Step 6: Final answer
    x = 47,874.30

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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.