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Finding the Fourth Proportional to 170,612.21, 255,393.39 and 111,320.21

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Solution

The fourth proportional to 170,612.21, 255,393.39 and 111,320.21 is: 166,637.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,612.21 : 255,393.39 = 111,320.21 : x
  2. Step 2: Convert to fraction form
    170,612.21/255,393.39 = 111,320.21/x
  3. Step 3: Cross multiply
    170,612.21x = 255,393.39 × 111,320.21
  4. Step 4: Simplify right side
    170,612.21x = 28,430,445,807.41
  5. Step 5: Solve for x
    x = 28,430,445,807.41/170,612.21
  6. Step 6: Final answer
    x = 166,637.81

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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.