Home / 103,036.20-154,554.30-79,679.40

Finding the Fourth Proportional to 103,036.20, 154,554.30 and 79,679.40

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Solution

The fourth proportional to 103,036.20, 154,554.30 and 79,679.40 is: 119,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,036.20 : 154,554.30 = 79,679.40 : x
  2. Step 2: Convert to fraction form
    103,036.20/154,554.30 = 79,679.40/x
  3. Step 3: Cross multiply
    103,036.20x = 154,554.30 × 79,679.40
  4. Step 4: Simplify right side
    103,036.20x = 12,314,793,891.42
  5. Step 5: Solve for x
    x = 12,314,793,891.42/103,036.20
  6. Step 6: Final answer
    x = 119,519.10

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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.