Home / 128,342.17-192,680.93-103,055.19

Finding the Fourth Proportional to 128,342.17, 192,680.93 and 103,055.19

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Solution

The fourth proportional to 128,342.17, 192,680.93 and 103,055.19 is: 154,717.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,342.17 : 192,680.93 = 103,055.19 : x
  2. Step 2: Convert to fraction form
    128,342.17/192,680.93 = 103,055.19/x
  3. Step 3: Cross multiply
    128,342.17x = 192,680.93 × 103,055.19
  4. Step 4: Simplify right side
    128,342.17x = 19,856,768,371.85
  5. Step 5: Solve for x
    x = 19,856,768,371.85/128,342.17
  6. Step 6: Final answer
    x = 154,717.41

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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.