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Finding the Fourth Proportional to 194,658.30, 291,987.45 and 120,930.30

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Solution

The fourth proportional to 194,658.30, 291,987.45 and 120,930.30 is: 181,395.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,658.30 : 291,987.45 = 120,930.30 : x
  2. Step 2: Convert to fraction form
    194,658.30/291,987.45 = 120,930.30/x
  3. Step 3: Cross multiply
    194,658.30x = 291,987.45 × 120,930.30
  4. Step 4: Simplify right side
    194,658.30x = 35,310,129,924.74
  5. Step 5: Solve for x
    x = 35,310,129,924.74/194,658.30
  6. Step 6: Final answer
    x = 181,395.45

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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.