Home / 128,436,753.60-192,393,856.80-79,765,214.40

Finding the Fourth Proportional to 128,436,753.60, 192,393,856.80 and 79,765,214.40

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Solution

The fourth proportional to 128,436,753.60, 192,393,856.80 and 79,765,214.40 is: 119,485,558.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,436,753.60 : 192,393,856.80 = 79,765,214.40 : x
  2. Step 2: Convert to fraction form
    128,436,753.60/192,393,856.80 = 79,765,214.40/x
  3. Step 3: Cross multiply
    128,436,753.60x = 192,393,856.80 × 79,765,214.40
  4. Step 4: Simplify right side
    128,436,753.60x = 15,346,337,236,894,900
  5. Step 5: Solve for x
    x = 15,346,337,236,894,900/128,436,753.60
  6. Step 6: Final answer
    x = 119,485,558.51

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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.