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Finding the Fourth Proportional to 170,700.72, 255,555.24 and 99,406

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Solution

The fourth proportional to 170,700.72, 255,555.24 and 99,406 is: 148,820.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,700.72 : 255,555.24 = 99,406 : x
  2. Step 2: Convert to fraction form
    170,700.72/255,555.24 = 99,406/x
  3. Step 3: Cross multiply
    170,700.72x = 255,555.24 × 99,406
  4. Step 4: Simplify right side
    170,700.72x = 25,403,724,187.44
  5. Step 5: Solve for x
    x = 25,403,724,187.44/170,700.72
  6. Step 6: Final answer
    x = 148,820.25

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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.