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Finding the Fourth Proportional to 170,172.66, 255,258.93 and 45,510.42

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Solution

The fourth proportional to 170,172.66, 255,258.93 and 45,510.42 is: 68,265.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,172.66 : 255,258.93 = 45,510.42 : x
  2. Step 2: Convert to fraction form
    170,172.66/255,258.93 = 45,510.42/x
  3. Step 3: Cross multiply
    170,172.66x = 255,258.93 × 45,510.42
  4. Step 4: Simplify right side
    170,172.66x = 11,616,941,113.05
  5. Step 5: Solve for x
    x = 11,616,941,113.05/170,172.66
  6. Step 6: Final answer
    x = 68,265.61

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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.