Home / 115,215.70-172,932.90-70,928.95

Finding the Fourth Proportional to 115,215.70, 172,932.90 and 70,928.95

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Solution

The fourth proportional to 115,215.70, 172,932.90 and 70,928.95 is: 106,460.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,215.70 : 172,932.90 = 70,928.95 : x
  2. Step 2: Convert to fraction form
    115,215.70/172,932.90 = 70,928.95/x
  3. Step 3: Cross multiply
    115,215.70x = 172,932.90 × 70,928.95
  4. Step 4: Simplify right side
    115,215.70x = 12,265,949,017.46
  5. Step 5: Solve for x
    x = 12,265,949,017.46/115,215.70
  6. Step 6: Final answer
    x = 106,460.74

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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.