Home / 120,631.98-180,949.14-45,732

Finding the Fourth Proportional to 120,631.98, 180,949.14 and 45,732

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Solution

The fourth proportional to 120,631.98, 180,949.14 and 45,732 is: 68,598.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,631.98 : 180,949.14 = 45,732 : x
  2. Step 2: Convert to fraction form
    120,631.98/180,949.14 = 45,732/x
  3. Step 3: Cross multiply
    120,631.98x = 180,949.14 × 45,732
  4. Step 4: Simplify right side
    120,631.98x = 8,275,166,070.48
  5. Step 5: Solve for x
    x = 8,275,166,070.48/120,631.98
  6. Step 6: Final answer
    x = 68,598.44

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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.