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Finding the Fourth Proportional to 172,066.59, 257,999.43 and 66,762.54

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Solution

The fourth proportional to 172,066.59, 257,999.43 and 66,762.54 is: 100,104.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,066.59 : 257,999.43 = 66,762.54 : x
  2. Step 2: Convert to fraction form
    172,066.59/257,999.43 = 66,762.54/x
  3. Step 3: Cross multiply
    172,066.59x = 257,999.43 × 66,762.54
  4. Step 4: Simplify right side
    172,066.59x = 17,224,697,265.35
  5. Step 5: Solve for x
    x = 17,224,697,265.35/172,066.59
  6. Step 6: Final answer
    x = 100,104.83

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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.