Home / 128,186.86-192,113-92,767.46

Finding the Fourth Proportional to 128,186.86, 192,113 and 92,767.46

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Solution

The fourth proportional to 128,186.86, 192,113 and 92,767.46 is: 139,030.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,186.86 : 192,113 = 92,767.46 : x
  2. Step 2: Convert to fraction form
    128,186.86/192,113 = 92,767.46/x
  3. Step 3: Cross multiply
    128,186.86x = 192,113 × 92,767.46
  4. Step 4: Simplify right side
    128,186.86x = 17,821,835,042.98
  5. Step 5: Solve for x
    x = 17,821,835,042.98/128,186.86
  6. Step 6: Final answer
    x = 139,030.12

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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.