Home / 109,435.32-163,686.42-67,211.64

Finding the Fourth Proportional to 109,435.32, 163,686.42 and 67,211.64

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Solution

The fourth proportional to 109,435.32, 163,686.42 and 67,211.64 is: 100,530.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,435.32 : 163,686.42 = 67,211.64 : x
  2. Step 2: Convert to fraction form
    109,435.32/163,686.42 = 67,211.64/x
  3. Step 3: Cross multiply
    109,435.32x = 163,686.42 × 67,211.64
  4. Step 4: Simplify right side
    109,435.32x = 11,001,632,733.93
  5. Step 5: Solve for x
    x = 11,001,632,733.93/109,435.32
  6. Step 6: Final answer
    x = 100,530.91

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1.5x scale

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.