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Finding the Fourth Proportional to 96,879.40, 145,319.10 and 89,297.80

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Solution

The fourth proportional to 96,879.40, 145,319.10 and 89,297.80 is: 133,946.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,879.40 : 145,319.10 = 89,297.80 : x
  2. Step 2: Convert to fraction form
    96,879.40/145,319.10 = 89,297.80/x
  3. Step 3: Cross multiply
    96,879.40x = 145,319.10 × 89,297.80
  4. Step 4: Simplify right side
    96,879.40x = 12,976,675,927.98
  5. Step 5: Solve for x
    x = 12,976,675,927.98/96,879.40
  6. Step 6: Final answer
    x = 133,946.70

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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.