Home / 129,479,478.18-194,295,816.90-47,655,825.72

Finding the Fourth Proportional to 129,479,478.18, 194,295,816.90 and 47,655,825.72

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Solution

The fourth proportional to 129,479,478.18, 194,295,816.90 and 47,655,825.72 is: 71,511,931.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,479,478.18 : 194,295,816.90 = 47,655,825.72 : x
  2. Step 2: Convert to fraction form
    129,479,478.18/194,295,816.90 = 47,655,825.72/x
  3. Step 3: Cross multiply
    129,479,478.18x = 194,295,816.90 × 47,655,825.72
  4. Step 4: Simplify right side
    129,479,478.18x = 9,259,327,588,311,430
  5. Step 5: Solve for x
    x = 9,259,327,588,311,430/129,479,478.18
  6. Step 6: Final answer
    x = 71,511,931.61

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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.