Home / 202,620.07-279,621.27-111,981.90

Finding the Fourth Proportional to 202,620.07, 279,621.27 and 111,981.90

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Solution

The fourth proportional to 202,620.07, 279,621.27 and 111,981.90 is: 154,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,620.07 : 279,621.27 = 111,981.90 : x
  2. Step 2: Convert to fraction form
    202,620.07/279,621.27 = 111,981.90/x
  3. Step 3: Cross multiply
    202,620.07x = 279,621.27 × 111,981.90
  4. Step 4: Simplify right side
    202,620.07x = 31,312,521,095.01
  5. Step 5: Solve for x
    x = 31,312,521,095.01/202,620.07
  6. Step 6: Final answer
    x = 154,538.10

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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.