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Finding the Fourth Proportional to 171,138.88, 256,707.42 and 46,479.88

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Solution

The fourth proportional to 171,138.88, 256,707.42 and 46,479.88 is: 69,719.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,138.88 : 256,707.42 = 46,479.88 : x
  2. Step 2: Convert to fraction form
    171,138.88/256,707.42 = 46,479.88/x
  3. Step 3: Cross multiply
    171,138.88x = 256,707.42 × 46,479.88
  4. Step 4: Simplify right side
    171,138.88x = 11,931,730,076.71
  5. Step 5: Solve for x
    x = 11,931,730,076.71/171,138.88
  6. Step 6: Final answer
    x = 69,719.58

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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.