Home / 148,985.21-205,603.62-81,006.77

Finding the Fourth Proportional to 148,985.21, 205,603.62 and 81,006.77

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Solution

The fourth proportional to 148,985.21, 205,603.62 and 81,006.77 is: 111,791.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,985.21 : 205,603.62 = 81,006.77 : x
  2. Step 2: Convert to fraction form
    148,985.21/205,603.62 = 81,006.77/x
  3. Step 3: Cross multiply
    148,985.21x = 205,603.62 × 81,006.77
  4. Step 4: Simplify right side
    148,985.21x = 16,655,285,156.51
  5. Step 5: Solve for x
    x = 16,655,285,156.51/148,985.21
  6. Step 6: Final answer
    x = 111,791.53

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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.