Home / 128,324,441.60-192,533,901.60-42,065,662.40

Finding the Fourth Proportional to 128,324,441.60, 192,533,901.60 and 42,065,662.40

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Solution

The fourth proportional to 128,324,441.60, 192,533,901.60 and 42,065,662.40 is: 63,113,978.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,324,441.60 : 192,533,901.60 = 42,065,662.40 : x
  2. Step 2: Convert to fraction form
    128,324,441.60/192,533,901.60 = 42,065,662.40/x
  3. Step 3: Cross multiply
    128,324,441.60x = 192,533,901.60 × 42,065,662.40
  4. Step 4: Simplify right side
    128,324,441.60x = 8,099,066,105,260,419
  5. Step 5: Solve for x
    x = 8,099,066,105,260,419/128,324,441.60
  6. Step 6: Final answer
    x = 63,113,978.94

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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.