Home / 189,343.84-261,285.36-103,297.72

Finding the Fourth Proportional to 189,343.84, 261,285.36 and 103,297.72

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Solution

The fourth proportional to 189,343.84, 261,285.36 and 103,297.72 is: 142,545.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,343.84 : 261,285.36 = 103,297.72 : x
  2. Step 2: Convert to fraction form
    189,343.84/261,285.36 = 103,297.72/x
  3. Step 3: Cross multiply
    189,343.84x = 261,285.36 × 103,297.72
  4. Step 4: Simplify right side
    189,343.84x = 26,990,181,957.38
  5. Step 5: Solve for x
    x = 26,990,181,957.38/189,343.84
  6. Step 6: Final answer
    x = 142,545.87

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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.