Home / 129,435.90-194,153.72-40,697.16

Finding the Fourth Proportional to 129,435.90, 194,153.72 and 40,697.16

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Solution

The fourth proportional to 129,435.90, 194,153.72 and 40,697.16 is: 61,045.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,435.90 : 194,153.72 = 40,697.16 : x
  2. Step 2: Convert to fraction form
    129,435.90/194,153.72 = 40,697.16/x
  3. Step 3: Cross multiply
    129,435.90x = 194,153.72 × 40,697.16
  4. Step 4: Simplify right side
    129,435.90x = 7,901,504,803.95
  5. Step 5: Solve for x
    x = 7,901,504,803.95/129,435.90
  6. Step 6: Final answer
    x = 61,045.70

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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.