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Finding the Fourth Proportional to 172,908.75, 238,614.08 and 93,420.75

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Solution

The fourth proportional to 172,908.75, 238,614.08 and 93,420.75 is: 128,920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,908.75 : 238,614.08 = 93,420.75 : x
  2. Step 2: Convert to fraction form
    172,908.75/238,614.08 = 93,420.75/x
  3. Step 3: Cross multiply
    172,908.75x = 238,614.08 × 93,420.75
  4. Step 4: Simplify right side
    172,908.75x = 22,291,505,847.06
  5. Step 5: Solve for x
    x = 22,291,505,847.06/172,908.75
  6. Step 6: Final answer
    x = 128,920.64

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1.5x scale

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.