Home / 109,140.15-150,622.16-61,390.65

Finding the Fourth Proportional to 109,140.15, 150,622.16 and 61,390.65

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Solution

The fourth proportional to 109,140.15, 150,622.16 and 61,390.65 is: 84,724.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,140.15 : 150,622.16 = 61,390.65 : x
  2. Step 2: Convert to fraction form
    109,140.15/150,622.16 = 61,390.65/x
  3. Step 3: Cross multiply
    109,140.15x = 150,622.16 × 61,390.65
  4. Step 4: Simplify right side
    109,140.15x = 9,246,791,999.85
  5. Step 5: Solve for x
    x = 9,246,791,999.85/109,140.15
  6. Step 6: Final answer
    x = 84,724.02

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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.