Home / 105,747.45-145,881.18-63,297.78

Finding the Fourth Proportional to 105,747.45, 145,881.18 and 63,297.78

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Solution

The fourth proportional to 105,747.45, 145,881.18 and 63,297.78 is: 87,320.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,747.45 : 145,881.18 = 63,297.78 : x
  2. Step 2: Convert to fraction form
    105,747.45/145,881.18 = 63,297.78/x
  3. Step 3: Cross multiply
    105,747.45x = 145,881.18 × 63,297.78
  4. Step 4: Simplify right side
    105,747.45x = 9,233,954,837.78
  5. Step 5: Solve for x
    x = 9,233,954,837.78/105,747.45
  6. Step 6: Final answer
    x = 87,320.83

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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.