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Finding the Fourth Proportional to 202,728.51, 279,741.15 and 112,072.30

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Solution

The fourth proportional to 202,728.51, 279,741.15 and 112,072.30 is: 154,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,728.51 : 279,741.15 = 112,072.30 : x
  2. Step 2: Convert to fraction form
    202,728.51/279,741.15 = 112,072.30/x
  3. Step 3: Cross multiply
    202,728.51x = 279,741.15 × 112,072.30
  4. Step 4: Simplify right side
    202,728.51x = 31,351,233,385.79
  5. Step 5: Solve for x
    x = 31,351,233,385.79/202,728.51
  6. Step 6: Final answer
    x = 154,646.40

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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.