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Finding the Fourth Proportional to 105,607.71, 145,738.62 and 63,176.22

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Solution

The fourth proportional to 105,607.71, 145,738.62 and 63,176.22 is: 87,183.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,607.71 : 145,738.62 = 63,176.22 : x
  2. Step 2: Convert to fraction form
    105,607.71/145,738.62 = 63,176.22/x
  3. Step 3: Cross multiply
    105,607.71x = 145,738.62 × 63,176.22
  4. Step 4: Simplify right side
    105,607.71x = 9,207,215,119.62
  5. Step 5: Solve for x
    x = 9,207,215,119.62/105,607.71
  6. Step 6: Final answer
    x = 87,183.17

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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.