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Finding the Fourth Proportional to 194,620.80, 291,931.20 and 89,644.80

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Solution

The fourth proportional to 194,620.80, 291,931.20 and 89,644.80 is: 134,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,620.80 : 291,931.20 = 89,644.80 : x
  2. Step 2: Convert to fraction form
    194,620.80/291,931.20 = 89,644.80/x
  3. Step 3: Cross multiply
    194,620.80x = 291,931.20 × 89,644.80
  4. Step 4: Simplify right side
    194,620.80x = 26,170,114,037.76
  5. Step 5: Solve for x
    x = 26,170,114,037.76/194,620.80
  6. Step 6: Final answer
    x = 134,467.20

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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.