Home / 148,447.13-204,870-81,392.09

Finding the Fourth Proportional to 148,447.13, 204,870 and 81,392.09

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Solution

The fourth proportional to 148,447.13, 204,870 and 81,392.09 is: 112,328.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,447.13 : 204,870 = 81,392.09 : x
  2. Step 2: Convert to fraction form
    148,447.13/204,870 = 81,392.09/x
  3. Step 3: Cross multiply
    148,447.13x = 204,870 × 81,392.09
  4. Step 4: Simplify right side
    148,447.13x = 16,674,796,453.95
  5. Step 5: Solve for x
    x = 16,674,796,453.95/148,447.13
  6. Step 6: Final answer
    x = 112,328.19

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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.