Home / 128,324,513.60-192,534,009.60-42,065,734.40

Finding the Fourth Proportional to 128,324,513.60, 192,534,009.60 and 42,065,734.40

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Solution

The fourth proportional to 128,324,513.60, 192,534,009.60 and 42,065,734.40 is: 63,114,086.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,324,513.60 : 192,534,009.60 = 42,065,734.40 : x
  2. Step 2: Convert to fraction form
    128,324,513.60/192,534,009.60 = 42,065,734.40/x
  3. Step 3: Cross multiply
    128,324,513.60x = 192,534,009.60 × 42,065,734.40
  4. Step 4: Simplify right side
    128,324,513.60x = 8,099,084,510,800,650
  5. Step 5: Solve for x
    x = 8,099,084,510,800,650/128,324,513.60
  6. Step 6: Final answer
    x = 63,114,086.96

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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.