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Finding the Fourth Proportional to 103,373.73, 142,677.98 and 63,078.86

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Solution

The fourth proportional to 103,373.73, 142,677.98 and 63,078.86 is: 87,062.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,373.73 : 142,677.98 = 63,078.86 : x
  2. Step 2: Convert to fraction form
    103,373.73/142,677.98 = 63,078.86/x
  3. Step 3: Cross multiply
    103,373.73x = 142,677.98 × 63,078.86
  4. Step 4: Simplify right side
    103,373.73x = 8,999,964,325.50
  5. Step 5: Solve for x
    x = 8,999,964,325.50/103,373.73
  6. Step 6: Final answer
    x = 87,062.39

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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.