Home / 122,136,005.70-183,204,008.55-85,785,441.30

Finding the Fourth Proportional to 122,136,005.70, 183,204,008.55 and 85,785,441.30

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Solution

The fourth proportional to 122,136,005.70, 183,204,008.55 and 85,785,441.30 is: 128,678,161.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,136,005.70 : 183,204,008.55 = 85,785,441.30 : x
  2. Step 2: Convert to fraction form
    122,136,005.70/183,204,008.55 = 85,785,441.30/x
  3. Step 3: Cross multiply
    122,136,005.70x = 183,204,008.55 × 85,785,441.30
  4. Step 4: Simplify right side
    122,136,005.70x = 15,716,236,721,390,724
  5. Step 5: Solve for x
    x = 15,716,236,721,390,724/122,136,005.70
  6. Step 6: Final answer
    x = 128,678,161.95

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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.