Home / 170,712.81-256,401.18-139,146.03

Finding the Fourth Proportional to 170,712.81, 256,401.18 and 139,146.03

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Solution

The fourth proportional to 170,712.81, 256,401.18 and 139,146.03 is: 208,989.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,712.81 : 256,401.18 = 139,146.03 : x
  2. Step 2: Convert to fraction form
    170,712.81/256,401.18 = 139,146.03/x
  3. Step 3: Cross multiply
    170,712.81x = 256,401.18 × 139,146.03
  4. Step 4: Simplify right side
    170,712.81x = 35,677,206,284.32
  5. Step 5: Solve for x
    x = 35,677,206,284.32/170,712.81
  6. Step 6: Final answer
    x = 208,989.63

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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.