Home / 128,324,416.60-192,533,864.10-42,065,637.40

Finding the Fourth Proportional to 128,324,416.60, 192,533,864.10 and 42,065,637.40

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Solution

The fourth proportional to 128,324,416.60, 192,533,864.10 and 42,065,637.40 is: 63,113,941.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,324,416.60 : 192,533,864.10 = 42,065,637.40 : x
  2. Step 2: Convert to fraction form
    128,324,416.60/192,533,864.10 = 42,065,637.40/x
  3. Step 3: Cross multiply
    128,324,416.60x = 192,533,864.10 × 42,065,637.40
  4. Step 4: Simplify right side
    128,324,416.60x = 8,099,059,714,451,477
  5. Step 5: Solve for x
    x = 8,099,059,714,451,477/128,324,416.60
  6. Step 6: Final answer
    x = 63,113,941.44

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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.