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Finding the Fourth Proportional to 100,611.59, 138,813.71 and 60,310.64

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Solution

The fourth proportional to 100,611.59, 138,813.71 and 60,310.64 is: 83,210.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,611.59 : 138,813.71 = 60,310.64 : x
  2. Step 2: Convert to fraction form
    100,611.59/138,813.71 = 60,310.64/x
  3. Step 3: Cross multiply
    100,611.59x = 138,813.71 × 60,310.64
  4. Step 4: Simplify right side
    100,611.59x = 8,371,943,962.52
  5. Step 5: Solve for x
    x = 8,371,943,962.52/100,611.59
  6. Step 6: Final answer
    x = 83,210.54

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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.