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Finding the Fourth Proportional to 172,152.28, 258,129.06 and 66,848.32

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Solution

The fourth proportional to 172,152.28, 258,129.06 and 66,848.32 is: 100,233.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,152.28 : 258,129.06 = 66,848.32 : x
  2. Step 2: Convert to fraction form
    172,152.28/258,129.06 = 66,848.32/x
  3. Step 3: Cross multiply
    172,152.28x = 258,129.06 × 66,848.32
  4. Step 4: Simplify right side
    172,152.28x = 17,255,494,004.18
  5. Step 5: Solve for x
    x = 17,255,494,004.18/172,152.28
  6. Step 6: Final answer
    x = 100,233.90

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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.