Home / 128,520,890.20-192,805,771.50-42,284,155.96

Finding the Fourth Proportional to 128,520,890.20, 192,805,771.50 and 42,284,155.96

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Solution

The fourth proportional to 128,520,890.20, 192,805,771.50 and 42,284,155.96 is: 63,434,273.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,520,890.20 : 192,805,771.50 = 42,284,155.96 : x
  2. Step 2: Convert to fraction form
    128,520,890.20/192,805,771.50 = 42,284,155.96/x
  3. Step 3: Cross multiply
    128,520,890.20x = 192,805,771.50 × 42,284,155.96
  4. Step 4: Simplify right side
    128,520,890.20x = 8,152,629,312,094,123
  5. Step 5: Solve for x
    x = 8,152,629,312,094,123/128,520,890.20
  6. Step 6: Final answer
    x = 63,434,273.60

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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.