Home / 90,675,690.20-136,013,535.30-85,006,986.20

Finding the Fourth Proportional to 90,675,690.20, 136,013,535.30 and 85,006,986.20

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Solution

The fourth proportional to 90,675,690.20, 136,013,535.30 and 85,006,986.20 is: 127,510,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,675,690.20 : 136,013,535.30 = 85,006,986.20 : x
  2. Step 2: Convert to fraction form
    90,675,690.20/136,013,535.30 = 85,006,986.20/x
  3. Step 3: Cross multiply
    90,675,690.20x = 136,013,535.30 × 85,006,986.20
  4. Step 4: Simplify right side
    90,675,690.20x = 11,562,100,718,260,314
  5. Step 5: Solve for x
    x = 11,562,100,718,260,314/90,675,690.20
  6. Step 6: Final answer
    x = 127,510,479.30

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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.