Home / 154,783.76-213,522.89-101,100.20

Finding the Fourth Proportional to 154,783.76, 213,522.89 and 101,100.20

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Solution

The fourth proportional to 154,783.76, 213,522.89 and 101,100.20 is: 139,466.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,783.76 : 213,522.89 = 101,100.20 : x
  2. Step 2: Convert to fraction form
    154,783.76/213,522.89 = 101,100.20/x
  3. Step 3: Cross multiply
    154,783.76x = 213,522.89 × 101,100.20
  4. Step 4: Simplify right side
    154,783.76x = 21,587,205,310.46
  5. Step 5: Solve for x
    x = 21,587,205,310.46/154,783.76
  6. Step 6: Final answer
    x = 139,466.87

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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.