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Finding the Fourth Proportional to 202,719.76, 279,751.80 and 112,079.68

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Solution

The fourth proportional to 202,719.76, 279,751.80 and 112,079.68 is: 154,669.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,719.76 : 279,751.80 = 112,079.68 : x
  2. Step 2: Convert to fraction form
    202,719.76/279,751.80 = 112,079.68/x
  3. Step 3: Cross multiply
    202,719.76x = 279,751.80 × 112,079.68
  4. Step 4: Simplify right side
    202,719.76x = 31,354,492,223.42
  5. Step 5: Solve for x
    x = 31,354,492,223.42/202,719.76
  6. Step 6: Final answer
    x = 154,669.15

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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.