Home / 103,078.46-154,485.56-89,695.85

Finding the Fourth Proportional to 103,078.46, 154,485.56 and 89,695.85

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Solution

The fourth proportional to 103,078.46, 154,485.56 and 89,695.85 is: 134,428.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,078.46 : 154,485.56 = 89,695.85 : x
  2. Step 2: Convert to fraction form
    103,078.46/154,485.56 = 89,695.85/x
  3. Step 3: Cross multiply
    103,078.46x = 154,485.56 × 89,695.85
  4. Step 4: Simplify right side
    103,078.46x = 13,856,713,068.74
  5. Step 5: Solve for x
    x = 13,856,713,068.74/103,078.46
  6. Step 6: Final answer
    x = 134,428.79

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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.