Home / 128,304,857.60-192,457,286.40-104,118,387.20

Finding the Fourth Proportional to 128,304,857.60, 192,457,286.40 and 104,118,387.20

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Solution

The fourth proportional to 128,304,857.60, 192,457,286.40 and 104,118,387.20 is: 156,177,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,857.60 : 192,457,286.40 = 104,118,387.20 : x
  2. Step 2: Convert to fraction form
    128,304,857.60/192,457,286.40 = 104,118,387.20/x
  3. Step 3: Cross multiply
    128,304,857.60x = 192,457,286.40 × 104,118,387.20
  4. Step 4: Simplify right side
    128,304,857.60x = 20,038,342,264,856,496
  5. Step 5: Solve for x
    x = 20,038,342,264,856,496/128,304,857.60
  6. Step 6: Final answer
    x = 156,177,580.80

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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.