Home / 103,588,981.60-155,383,472.40-99,165,992.80

Finding the Fourth Proportional to 103,588,981.60, 155,383,472.40 and 99,165,992.80

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Solution

The fourth proportional to 103,588,981.60, 155,383,472.40 and 99,165,992.80 is: 148,748,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,588,981.60 : 155,383,472.40 = 99,165,992.80 : x
  2. Step 2: Convert to fraction form
    103,588,981.60/155,383,472.40 = 99,165,992.80/x
  3. Step 3: Cross multiply
    103,588,981.60x = 155,383,472.40 × 99,165,992.80
  4. Step 4: Simplify right side
    103,588,981.60x = 15,408,756,305,257,398
  5. Step 5: Solve for x
    x = 15,408,756,305,257,398/103,588,981.60
  6. Step 6: Final answer
    x = 148,748,989.20

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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.