Home / 129,345,120.80-194,017,681.20-61,320,672.80

Finding the Fourth Proportional to 129,345,120.80, 194,017,681.20 and 61,320,672.80

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Solution

The fourth proportional to 129,345,120.80, 194,017,681.20 and 61,320,672.80 is: 91,981,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,345,120.80 : 194,017,681.20 = 61,320,672.80 : x
  2. Step 2: Convert to fraction form
    129,345,120.80/194,017,681.20 = 61,320,672.80/x
  3. Step 3: Cross multiply
    129,345,120.80x = 194,017,681.20 × 61,320,672.80
  4. Step 4: Simplify right side
    129,345,120.80x = 11,897,294,746,279,910
  5. Step 5: Solve for x
    x = 11,897,294,746,279,910/129,345,120.80
  6. Step 6: Final answer
    x = 91,981,009.20

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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.