Home / 103,429,286.70-155,143,930.05-90,674,702.70

Finding the Fourth Proportional to 103,429,286.70, 155,143,930.05 and 90,674,702.70

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Solution

The fourth proportional to 103,429,286.70, 155,143,930.05 and 90,674,702.70 is: 136,012,054.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,429,286.70 : 155,143,930.05 = 90,674,702.70 : x
  2. Step 2: Convert to fraction form
    103,429,286.70/155,143,930.05 = 90,674,702.70/x
  3. Step 3: Cross multiply
    103,429,286.70x = 155,143,930.05 × 90,674,702.70
  4. Step 4: Simplify right side
    103,429,286.70x = 14,067,629,732,993,348
  5. Step 5: Solve for x
    x = 14,067,629,732,993,348/103,429,286.70
  6. Step 6: Final answer
    x = 136,012,054.05

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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.