Home / 90,675,686.70-136,013,530.05-85,006,982.70

Finding the Fourth Proportional to 90,675,686.70, 136,013,530.05 and 85,006,982.70

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Solution

The fourth proportional to 90,675,686.70, 136,013,530.05 and 85,006,982.70 is: 127,510,474.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,675,686.70 : 136,013,530.05 = 85,006,982.70 : x
  2. Step 2: Convert to fraction form
    90,675,686.70/136,013,530.05 = 85,006,982.70/x
  3. Step 3: Cross multiply
    90,675,686.70x = 136,013,530.05 × 85,006,982.70
  4. Step 4: Simplify right side
    90,675,686.70x = 11,562,099,795,926,282
  5. Step 5: Solve for x
    x = 11,562,099,795,926,282/90,675,686.70
  6. Step 6: Final answer
    x = 127,510,474.05

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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.