Home / 105,640.40-145,747.45-62,611.18

Finding the Fourth Proportional to 105,640.40, 145,747.45 and 62,611.18

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Solution

The fourth proportional to 105,640.40, 145,747.45 and 62,611.18 is: 86,381.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,640.40 : 145,747.45 = 62,611.18 : x
  2. Step 2: Convert to fraction form
    105,640.40/145,747.45 = 62,611.18/x
  3. Step 3: Cross multiply
    105,640.40x = 145,747.45 × 62,611.18
  4. Step 4: Simplify right side
    105,640.40x = 9,125,419,540.39
  5. Step 5: Solve for x
    x = 9,125,419,540.39/105,640.40
  6. Step 6: Final answer
    x = 86,381.91

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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.