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Finding the Fourth Proportional to 147,459.78, 221,189.61 and 36,651.78

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Solution

The fourth proportional to 147,459.78, 221,189.61 and 36,651.78 is: 54,977.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,459.78 : 221,189.61 = 36,651.78 : x
  2. Step 2: Convert to fraction form
    147,459.78/221,189.61 = 36,651.78/x
  3. Step 3: Cross multiply
    147,459.78x = 221,189.61 × 36,651.78
  4. Step 4: Simplify right side
    147,459.78x = 8,106,992,924.01
  5. Step 5: Solve for x
    x = 8,106,992,924.01/147,459.78
  6. Step 6: Final answer
    x = 54,977.66

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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.