Home / 212,943,121.60-319,413,645.60-83,459,243.20

Finding the Fourth Proportional to 212,943,121.60, 319,413,645.60 and 83,459,243.20

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Solution

The fourth proportional to 212,943,121.60, 319,413,645.60 and 83,459,243.20 is: 125,188,458.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,943,121.60 : 319,413,645.60 = 83,459,243.20 : x
  2. Step 2: Convert to fraction form
    212,943,121.60/319,413,645.60 = 83,459,243.20/x
  3. Step 3: Cross multiply
    212,943,121.60x = 319,413,645.60 × 83,459,243.20
  4. Step 4: Simplify right side
    212,943,121.60x = 26,658,021,129,529,012
  5. Step 5: Solve for x
    x = 26,658,021,129,529,012/212,943,121.60
  6. Step 6: Final answer
    x = 125,188,458.44

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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.