Home / 154,642,181.31-213,400,470.92-85,023,420.03

Finding the Fourth Proportional to 154,642,181.31, 213,400,470.92 and 85,023,420.03

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Solution

The fourth proportional to 154,642,181.31, 213,400,470.92 and 85,023,420.03 is: 117,329,164.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,642,181.31 : 213,400,470.92 = 85,023,420.03 : x
  2. Step 2: Convert to fraction form
    154,642,181.31/213,400,470.92 = 85,023,420.03/x
  3. Step 3: Cross multiply
    154,642,181.31x = 213,400,470.92 × 85,023,420.03
  4. Step 4: Simplify right side
    154,642,181.31x = 18,144,037,873,205,844
  5. Step 5: Solve for x
    x = 18,144,037,873,205,844/154,642,181.31
  6. Step 6: Final answer
    x = 117,329,164.14

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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.