Home / 90,770.40-136,285.20-51,404.40

Finding the Fourth Proportional to 90,770.40, 136,285.20 and 51,404.40

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Solution

The fourth proportional to 90,770.40, 136,285.20 and 51,404.40 is: 77,179.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,770.40 : 136,285.20 = 51,404.40 : x
  2. Step 2: Convert to fraction form
    90,770.40/136,285.20 = 51,404.40/x
  3. Step 3: Cross multiply
    90,770.40x = 136,285.20 × 51,404.40
  4. Step 4: Simplify right side
    90,770.40x = 7,005,658,934.88
  5. Step 5: Solve for x
    x = 7,005,658,934.88/90,770.40
  6. Step 6: Final answer
    x = 77,179.99

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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.