Home / 123,785,999.70-185,678,999.55-66,390,371.70

Finding the Fourth Proportional to 123,785,999.70, 185,678,999.55 and 66,390,371.70

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Solution

The fourth proportional to 123,785,999.70, 185,678,999.55 and 66,390,371.70 is: 99,585,557.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,785,999.70 : 185,678,999.55 = 66,390,371.70 : x
  2. Step 2: Convert to fraction form
    123,785,999.70/185,678,999.55 = 66,390,371.70/x
  3. Step 3: Cross multiply
    123,785,999.70x = 185,678,999.55 × 66,390,371.70
  4. Step 4: Simplify right side
    123,785,999.70x = 12,327,297,797,008,634
  5. Step 5: Solve for x
    x = 12,327,297,797,008,634/123,785,999.70
  6. Step 6: Final answer
    x = 99,585,557.55

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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.