Home / 128,952,443.60-193,428,665.40-85,905,722.60

Finding the Fourth Proportional to 128,952,443.60, 193,428,665.40 and 85,905,722.60

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Solution

The fourth proportional to 128,952,443.60, 193,428,665.40 and 85,905,722.60 is: 128,858,583.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,952,443.60 : 193,428,665.40 = 85,905,722.60 : x
  2. Step 2: Convert to fraction form
    128,952,443.60/193,428,665.40 = 85,905,722.60/x
  3. Step 3: Cross multiply
    128,952,443.60x = 193,428,665.40 × 85,905,722.60
  4. Step 4: Simplify right side
    128,952,443.60x = 16,616,629,272,740,618
  5. Step 5: Solve for x
    x = 16,616,629,272,740,618/128,952,443.60
  6. Step 6: Final answer
    x = 128,858,583.90

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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.