Home / 112,663,939.89-168,704,860.28-77,756,766.78

Finding the Fourth Proportional to 112,663,939.89, 168,704,860.28 and 77,756,766.78

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Solution

The fourth proportional to 112,663,939.89, 168,704,860.28 and 77,756,766.78 is: 116,434,277.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,663,939.89 : 168,704,860.28 = 77,756,766.78 : x
  2. Step 2: Convert to fraction form
    112,663,939.89/168,704,860.28 = 77,756,766.78/x
  3. Step 3: Cross multiply
    112,663,939.89x = 168,704,860.28 × 77,756,766.78
  4. Step 4: Simplify right side
    112,663,939.89x = 13,117,944,475,444,446
  5. Step 5: Solve for x
    x = 13,117,944,475,444,446/112,663,939.89
  6. Step 6: Final answer
    x = 116,434,277.80

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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.