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Finding the Fourth Proportional to 103,012.64, 154,506.80 and 27,118.88

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Solution

The fourth proportional to 103,012.64, 154,506.80 and 27,118.88 is: 40,675.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,012.64 : 154,506.80 = 27,118.88 : x
  2. Step 2: Convert to fraction form
    103,012.64/154,506.80 = 27,118.88/x
  3. Step 3: Cross multiply
    103,012.64x = 154,506.80 × 27,118.88
  4. Step 4: Simplify right side
    103,012.64x = 4,190,051,368.38
  5. Step 5: Solve for x
    x = 4,190,051,368.38/103,012.64
  6. Step 6: Final answer
    x = 40,675.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.