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Finding the Fourth Proportional to 170,756.64, 235,660.38 and 121,670.64

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Solution

The fourth proportional to 170,756.64, 235,660.38 and 121,670.64 is: 167,917.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,756.64 : 235,660.38 = 121,670.64 : x
  2. Step 2: Convert to fraction form
    170,756.64/235,660.38 = 121,670.64/x
  3. Step 3: Cross multiply
    170,756.64x = 235,660.38 × 121,670.64
  4. Step 4: Simplify right side
    170,756.64x = 28,672,949,257.24
  5. Step 5: Solve for x
    x = 28,672,949,257.24/170,756.64
  6. Step 6: Final answer
    x = 167,917.04

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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.