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Finding the Fourth Proportional to 202,719.90, 279,751.48 and 112,078.07

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Solution

The fourth proportional to 202,719.90, 279,751.48 and 112,078.07 is: 154,666.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,719.90 : 279,751.48 = 112,078.07 : x
  2. Step 2: Convert to fraction form
    202,719.90/279,751.48 = 112,078.07/x
  3. Step 3: Cross multiply
    202,719.90x = 279,751.48 × 112,078.07
  4. Step 4: Simplify right side
    202,719.90x = 31,354,005,958.04
  5. Step 5: Solve for x
    x = 31,354,005,958.04/202,719.90
  6. Step 6: Final answer
    x = 154,666.64

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1.5x scale

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.