Home / 148,983.89-205,600.01-81,000.72

Finding the Fourth Proportional to 148,983.89, 205,600.01 and 81,000.72

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Solution

The fourth proportional to 148,983.89, 205,600.01 and 81,000.72 is: 111,782.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,983.89 : 205,600.01 = 81,000.72 : x
  2. Step 2: Convert to fraction form
    148,983.89/205,600.01 = 81,000.72/x
  3. Step 3: Cross multiply
    148,983.89x = 205,600.01 × 81,000.72
  4. Step 4: Simplify right side
    148,983.89x = 16,653,748,437.00
  5. Step 5: Solve for x
    x = 16,653,748,437.00/148,983.89
  6. Step 6: Final answer
    x = 111,782.21

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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.