Home / 105,801.27-145,823.94-100,818.56

Finding the Fourth Proportional to 105,801.27, 145,823.94 and 100,818.56

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Solution

The fourth proportional to 105,801.27, 145,823.94 and 100,818.56 is: 138,956.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,801.27 : 145,823.94 = 100,818.56 : x
  2. Step 2: Convert to fraction form
    105,801.27/145,823.94 = 100,818.56/x
  3. Step 3: Cross multiply
    105,801.27x = 145,823.94 × 100,818.56
  4. Step 4: Simplify right side
    105,801.27x = 14,701,758,915.21
  5. Step 5: Solve for x
    x = 14,701,758,915.21/105,801.27
  6. Step 6: Final answer
    x = 138,956.36

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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.