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Finding the Fourth Proportional to 190,009.71, 262,202.54 and 105,121.71

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Solution

The fourth proportional to 190,009.71, 262,202.54 and 105,121.71 is: 145,061.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,009.71 : 262,202.54 = 105,121.71 : x
  2. Step 2: Convert to fraction form
    190,009.71/262,202.54 = 105,121.71/x
  3. Step 3: Cross multiply
    190,009.71x = 262,202.54 × 105,121.71
  4. Step 4: Simplify right side
    190,009.71x = 27,563,178,845.53
  5. Step 5: Solve for x
    x = 27,563,178,845.53/190,009.71
  6. Step 6: Final answer
    x = 145,061.95

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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.