Home / 170,713.31-256,401.93-139,146.53

Finding the Fourth Proportional to 170,713.31, 256,401.93 and 139,146.53

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Solution

The fourth proportional to 170,713.31, 256,401.93 and 139,146.53 is: 208,990.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,713.31 : 256,401.93 = 139,146.53 : x
  2. Step 2: Convert to fraction form
    170,713.31/256,401.93 = 139,146.53/x
  3. Step 3: Cross multiply
    170,713.31x = 256,401.93 × 139,146.53
  4. Step 4: Simplify right side
    170,713.31x = 35,677,438,844.80
  5. Step 5: Solve for x
    x = 35,677,438,844.80/170,713.31
  6. Step 6: Final answer
    x = 208,990.38

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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.