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Finding the Fourth Proportional to 118,223.70, 176,903.55 and 87,119.70

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Solution

The fourth proportional to 118,223.70, 176,903.55 and 87,119.70 is: 130,361.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,223.70 : 176,903.55 = 87,119.70 : x
  2. Step 2: Convert to fraction form
    118,223.70/176,903.55 = 87,119.70/x
  3. Step 3: Cross multiply
    118,223.70x = 176,903.55 × 87,119.70
  4. Step 4: Simplify right side
    118,223.70x = 15,411,784,204.94
  5. Step 5: Solve for x
    x = 15,411,784,204.94/118,223.70
  6. Step 6: Final answer
    x = 130,361.21

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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.