Home / 102,689,904.78-154,084,679.82-45,174,702.60

Finding the Fourth Proportional to 102,689,904.78, 154,084,679.82 and 45,174,702.60

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Solution

The fourth proportional to 102,689,904.78, 154,084,679.82 and 45,174,702.60 is: 67,783,971.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,689,904.78 : 154,084,679.82 = 45,174,702.60 : x
  2. Step 2: Convert to fraction form
    102,689,904.78/154,084,679.82 = 45,174,702.60/x
  3. Step 3: Cross multiply
    102,689,904.78x = 154,084,679.82 × 45,174,702.60
  4. Step 4: Simplify right side
    102,689,904.78x = 6,960,729,586,084,721
  5. Step 5: Solve for x
    x = 6,960,729,586,084,721/102,689,904.78
  6. Step 6: Final answer
    x = 67,783,971.57

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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.