Home / 154,618,272-213,367,778.64-85,003,146

Finding the Fourth Proportional to 154,618,272, 213,367,778.64 and 85,003,146

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Solution

The fourth proportional to 154,618,272, 213,367,778.64 and 85,003,146 is: 117,301,352.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,618,272 : 213,367,778.64 = 85,003,146 : x
  2. Step 2: Convert to fraction form
    154,618,272/213,367,778.64 = 85,003,146/x
  3. Step 3: Cross multiply
    154,618,272x = 213,367,778.64 × 85,003,146
  4. Step 4: Simplify right side
    154,618,272x = 18,136,932,439,431,600
  5. Step 5: Solve for x
    x = 18,136,932,439,431,600/154,618,272
  6. Step 6: Final answer
    x = 117,301,352.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.