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Finding the Fourth Proportional to 172,754.63, 259,074.06 and 66,113.81

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Solution

The fourth proportional to 172,754.63, 259,074.06 and 66,113.81 is: 99,148.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,754.63 : 259,074.06 = 66,113.81 : x
  2. Step 2: Convert to fraction form
    172,754.63/259,074.06 = 66,113.81/x
  3. Step 3: Cross multiply
    172,754.63x = 259,074.06 × 66,113.81
  4. Step 4: Simplify right side
    172,754.63x = 17,128,373,178.77
  5. Step 5: Solve for x
    x = 17,128,373,178.77/172,754.63
  6. Step 6: Final answer
    x = 99,148.56

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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.