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Finding the Fourth Proportional to 201,676, 278,312.88 and 112,250.08

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Solution

The fourth proportional to 201,676, 278,312.88 and 112,250.08 is: 154,905.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,676 : 278,312.88 = 112,250.08 : x
  2. Step 2: Convert to fraction form
    201,676/278,312.88 = 112,250.08/x
  3. Step 3: Cross multiply
    201,676x = 278,312.88 × 112,250.08
  4. Step 4: Simplify right side
    201,676x = 31,240,643,045.03
  5. Step 5: Solve for x
    x = 31,240,643,045.03/201,676
  6. Step 6: Final answer
    x = 154,905.11

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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.