Home / 120,613,619.78-180,463,878.39-71,455,864.47

Finding the Fourth Proportional to 120,613,619.78, 180,463,878.39 and 71,455,864.47

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Solution

The fourth proportional to 120,613,619.78, 180,463,878.39 and 71,455,864.47 is: 106,913,319.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,613,619.78 : 180,463,878.39 = 71,455,864.47 : x
  2. Step 2: Convert to fraction form
    120,613,619.78/180,463,878.39 = 71,455,864.47/x
  3. Step 3: Cross multiply
    120,613,619.78x = 180,463,878.39 × 71,455,864.47
  4. Step 4: Simplify right side
    120,613,619.78x = 12,895,202,435,356,832
  5. Step 5: Solve for x
    x = 12,895,202,435,356,832/120,613,619.78
  6. Step 6: Final answer
    x = 106,913,319.23

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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.