Home / 128,343.17-192,682.43-103,056.19

Finding the Fourth Proportional to 128,343.17, 192,682.43 and 103,056.19

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Solution

The fourth proportional to 128,343.17, 192,682.43 and 103,056.19 is: 154,718.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,343.17 : 192,682.43 = 103,056.19 : x
  2. Step 2: Convert to fraction form
    128,343.17/192,682.43 = 103,056.19/x
  3. Step 3: Cross multiply
    128,343.17x = 192,682.43 × 103,056.19
  4. Step 4: Simplify right side
    128,343.17x = 19,857,117,115.74
  5. Step 5: Solve for x
    x = 19,857,117,115.74/128,343.17
  6. Step 6: Final answer
    x = 154,718.92

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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.