Home / 199,320,909.40-298,981,364.10-130,446,155.80

Finding the Fourth Proportional to 199,320,909.40, 298,981,364.10 and 130,446,155.80

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Solution

The fourth proportional to 199,320,909.40, 298,981,364.10 and 130,446,155.80 is: 195,669,233.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,320,909.40 : 298,981,364.10 = 130,446,155.80 : x
  2. Step 2: Convert to fraction form
    199,320,909.40/298,981,364.10 = 130,446,155.80/x
  3. Step 3: Cross multiply
    199,320,909.40x = 298,981,364.10 × 130,446,155.80
  4. Step 4: Simplify right side
    199,320,909.40x = 39,000,969,602,685,128
  5. Step 5: Solve for x
    x = 39,000,969,602,685,128/199,320,909.40
  6. Step 6: Final answer
    x = 195,669,233.70

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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.