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Finding the Fourth Proportional to 98,203.39, 147,190.80 and 56,112.95

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Solution

The fourth proportional to 98,203.39, 147,190.80 and 56,112.95 is: 84,104.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,203.39 : 147,190.80 = 56,112.95 : x
  2. Step 2: Convert to fraction form
    98,203.39/147,190.80 = 56,112.95/x
  3. Step 3: Cross multiply
    98,203.39x = 147,190.80 × 56,112.95
  4. Step 4: Simplify right side
    98,203.39x = 8,259,310,000.86
  5. Step 5: Solve for x
    x = 8,259,310,000.86/98,203.39
  6. Step 6: Final answer
    x = 84,104.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.