Home / 221,116.98-305,103.12-130,466.10

Finding the Fourth Proportional to 221,116.98, 305,103.12 and 130,466.10

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Solution

The fourth proportional to 221,116.98, 305,103.12 and 130,466.10 is: 180,020.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,116.98 : 305,103.12 = 130,466.10 : x
  2. Step 2: Convert to fraction form
    221,116.98/305,103.12 = 130,466.10/x
  3. Step 3: Cross multiply
    221,116.98x = 305,103.12 × 130,466.10
  4. Step 4: Simplify right side
    221,116.98x = 39,805,614,164.23
  5. Step 5: Solve for x
    x = 39,805,614,164.23/221,116.98
  6. Step 6: Final answer
    x = 180,020.61

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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.