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Finding the Fourth Proportional to 190,752, 286,128.02 and 72,423.41

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Solution

The fourth proportional to 190,752, 286,128.02 and 72,423.41 is: 108,635.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,752 : 286,128.02 = 72,423.41 : x
  2. Step 2: Convert to fraction form
    190,752/286,128.02 = 72,423.41/x
  3. Step 3: Cross multiply
    190,752x = 286,128.02 × 72,423.41
  4. Step 4: Simplify right side
    190,752x = 20,722,365,112.19
  5. Step 5: Solve for x
    x = 20,722,365,112.19/190,752
  6. Step 6: Final answer
    x = 108,635.11

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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.