Home / 193,546,156.80-289,840,938.30-128,497,778.40

Finding the Fourth Proportional to 193,546,156.80, 289,840,938.30 and 128,497,778.40

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Solution

The fourth proportional to 193,546,156.80, 289,840,938.30 and 128,497,778.40 is: 192,429,120.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,546,156.80 : 289,840,938.30 = 128,497,778.40 : x
  2. Step 2: Convert to fraction form
    193,546,156.80/289,840,938.30 = 128,497,778.40/x
  3. Step 3: Cross multiply
    193,546,156.80x = 289,840,938.30 × 128,497,778.40
  4. Step 4: Simplify right side
    193,546,156.80x = 37,243,916,660,921,472
  5. Step 5: Solve for x
    x = 37,243,916,660,921,472/193,546,156.80
  6. Step 6: Final answer
    x = 192,429,120.15

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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.