Home / 105,518.68-158,286.21-30,640.05

Finding the Fourth Proportional to 105,518.68, 158,286.21 and 30,640.05

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Solution

The fourth proportional to 105,518.68, 158,286.21 and 30,640.05 is: 45,962.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,518.68 : 158,286.21 = 30,640.05 : x
  2. Step 2: Convert to fraction form
    105,518.68/158,286.21 = 30,640.05/x
  3. Step 3: Cross multiply
    105,518.68x = 158,286.21 × 30,640.05
  4. Step 4: Simplify right side
    105,518.68x = 4,849,897,388.71
  5. Step 5: Solve for x
    x = 4,849,897,388.71/105,518.68
  6. Step 6: Final answer
    x = 45,962.45

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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.