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Finding the Fourth Proportional to 149,113.00, 205,775.94 and 81,130.01

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Solution

The fourth proportional to 149,113.00, 205,775.94 and 81,130.01 is: 111,959.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,113.00 : 205,775.94 = 81,130.01 : x
  2. Step 2: Convert to fraction form
    149,113.00/205,775.94 = 81,130.01/x
  3. Step 3: Cross multiply
    149,113.00x = 205,775.94 × 81,130.01
  4. Step 4: Simplify right side
    149,113.00x = 16,694,603,345.32
  5. Step 5: Solve for x
    x = 16,694,603,345.32/149,113.00
  6. Step 6: Final answer
    x = 111,959.41

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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.