Home / 83,706.33-115,612.13-70,143.51

Finding the Fourth Proportional to 83,706.33, 115,612.13 and 70,143.51

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Solution

The fourth proportional to 83,706.33, 115,612.13 and 70,143.51 is: 96,879.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,706.33 : 115,612.13 = 70,143.51 : x
  2. Step 2: Convert to fraction form
    83,706.33/115,612.13 = 70,143.51/x
  3. Step 3: Cross multiply
    83,706.33x = 115,612.13 × 70,143.51
  4. Step 4: Simplify right side
    83,706.33x = 8,109,440,246.06
  5. Step 5: Solve for x
    x = 8,109,440,246.06/83,706.33
  6. Step 6: Final answer
    x = 96,879.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.