Home / 103,511.01-142,845.80-58,188.60

Finding the Fourth Proportional to 103,511.01, 142,845.80 and 58,188.60

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Solution

The fourth proportional to 103,511.01, 142,845.80 and 58,188.60 is: 80,300.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,511.01 : 142,845.80 = 58,188.60 : x
  2. Step 2: Convert to fraction form
    103,511.01/142,845.80 = 58,188.60/x
  3. Step 3: Cross multiply
    103,511.01x = 142,845.80 × 58,188.60
  4. Step 4: Simplify right side
    103,511.01x = 8,311,996,826.94
  5. Step 5: Solve for x
    x = 8,311,996,826.94/103,511.01
  6. Step 6: Final answer
    x = 80,300.61

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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.