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Finding the Fourth Proportional to 102,036.76, 140,880.81 and 63,812.86

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Solution

The fourth proportional to 102,036.76, 140,880.81 and 63,812.86 is: 88,105.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,036.76 : 140,880.81 = 63,812.86 : x
  2. Step 2: Convert to fraction form
    102,036.76/140,880.81 = 63,812.86/x
  3. Step 3: Cross multiply
    102,036.76x = 140,880.81 × 63,812.86
  4. Step 4: Simplify right side
    102,036.76x = 8,990,007,405.22
  5. Step 5: Solve for x
    x = 8,990,007,405.22/102,036.76
  6. Step 6: Final answer
    x = 88,105.57

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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.