Home / 221,965.16-306,295.98-137,083.64

Finding the Fourth Proportional to 221,965.16, 306,295.98 and 137,083.64

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Solution

The fourth proportional to 221,965.16, 306,295.98 and 137,083.64 is: 189,165.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,965.16 : 306,295.98 = 137,083.64 : x
  2. Step 2: Convert to fraction form
    221,965.16/306,295.98 = 137,083.64/x
  3. Step 3: Cross multiply
    221,965.16x = 306,295.98 × 137,083.64
  4. Step 4: Simplify right side
    221,965.16x = 41,988,167,855.77
  5. Step 5: Solve for x
    x = 41,988,167,855.77/221,965.16
  6. Step 6: Final answer
    x = 189,165.58

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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.