Home / 120,850,120.67-180,913,865.78-74,016,141.01

Finding the Fourth Proportional to 120,850,120.67, 180,913,865.78 and 74,016,141.01

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Solution

The fourth proportional to 120,850,120.67, 180,913,865.78 and 74,016,141.01 is: 110,802,919.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,850,120.67 : 180,913,865.78 = 74,016,141.01 : x
  2. Step 2: Convert to fraction form
    120,850,120.67/180,913,865.78 = 74,016,141.01/x
  3. Step 3: Cross multiply
    120,850,120.67x = 180,913,865.78 × 74,016,141.01
  4. Step 4: Simplify right side
    120,850,120.67x = 13,390,546,199,969,448
  5. Step 5: Solve for x
    x = 13,390,546,199,969,448/120,850,120.67
  6. Step 6: Final answer
    x = 110,802,919.57

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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.