Home / 155,404,254.39-214,458,556.03-85,790,207.31

Finding the Fourth Proportional to 155,404,254.39, 214,458,556.03 and 85,790,207.31

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Solution

The fourth proportional to 155,404,254.39, 214,458,556.03 and 85,790,207.31 is: 118,390,864.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,404,254.39 : 214,458,556.03 = 85,790,207.31 : x
  2. Step 2: Convert to fraction form
    155,404,254.39/214,458,556.03 = 85,790,207.31/x
  3. Step 3: Cross multiply
    155,404,254.39x = 214,458,556.03 × 85,790,207.31
  4. Step 4: Simplify right side
    155,404,254.39x = 18,398,443,981,216,952
  5. Step 5: Solve for x
    x = 18,398,443,981,216,952/155,404,254.39
  6. Step 6: Final answer
    x = 118,390,864.22

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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.