Home / 151,390,085.12-208,918,288.32-81,775,469.60

Finding the Fourth Proportional to 151,390,085.12, 208,918,288.32 and 81,775,469.60

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Solution

The fourth proportional to 151,390,085.12, 208,918,288.32 and 81,775,469.60 is: 112,850,132.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,390,085.12 : 208,918,288.32 = 81,775,469.60 : x
  2. Step 2: Convert to fraction form
    151,390,085.12/208,918,288.32 = 81,775,469.60/x
  3. Step 3: Cross multiply
    151,390,085.12x = 208,918,288.32 × 81,775,469.60
  4. Step 4: Simplify right side
    151,390,085.12x = 17,084,391,135,396,194
  5. Step 5: Solve for x
    x = 17,084,391,135,396,194/151,390,085.12
  6. Step 6: Final answer
    x = 112,850,132.30

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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.