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Finding the Fourth Proportional to 96,994.45, 145,491.68 and 77,311.45

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Solution

The fourth proportional to 96,994.45, 145,491.68 and 77,311.45 is: 115,967.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,994.45 : 145,491.68 = 77,311.45 : x
  2. Step 2: Convert to fraction form
    96,994.45/145,491.68 = 77,311.45/x
  3. Step 3: Cross multiply
    96,994.45x = 145,491.68 × 77,311.45
  4. Step 4: Simplify right side
    96,994.45x = 11,248,172,743.74
  5. Step 5: Solve for x
    x = 11,248,172,743.74/96,994.45
  6. Step 6: Final answer
    x = 115,967.18

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1.5x scale

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.