Home / 103,078.31-154,354.95-67,911.35

Finding the Fourth Proportional to 103,078.31, 154,354.95 and 67,911.35

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Solution

The fourth proportional to 103,078.31, 154,354.95 and 67,911.35 is: 101,694.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,078.31 : 154,354.95 = 67,911.35 : x
  2. Step 2: Convert to fraction form
    103,078.31/154,354.95 = 67,911.35/x
  3. Step 3: Cross multiply
    103,078.31x = 154,354.95 × 67,911.35
  4. Step 4: Simplify right side
    103,078.31x = 10,482,452,261.91
  5. Step 5: Solve for x
    x = 10,482,452,261.91/103,078.31
  6. Step 6: Final answer
    x = 101,694.07

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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.