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Finding the Fourth Proportional to 105,673.68, 145,831.32 and 63,234

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Solution

The fourth proportional to 105,673.68, 145,831.32 and 63,234 is: 87,263.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,673.68 : 145,831.32 = 63,234 : x
  2. Step 2: Convert to fraction form
    105,673.68/145,831.32 = 63,234/x
  3. Step 3: Cross multiply
    105,673.68x = 145,831.32 × 63,234
  4. Step 4: Simplify right side
    105,673.68x = 9,221,497,688.88
  5. Step 5: Solve for x
    x = 9,221,497,688.88/105,673.68
  6. Step 6: Final answer
    x = 87,263.90

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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.