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Finding the Fourth Proportional to 118,402, 177,690.66 and 56,072.68

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Solution

The fourth proportional to 118,402, 177,690.66 and 56,072.68 is: 84,150.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,402 : 177,690.66 = 56,072.68 : x
  2. Step 2: Convert to fraction form
    118,402/177,690.66 = 56,072.68/x
  3. Step 3: Cross multiply
    118,402x = 177,690.66 × 56,072.68
  4. Step 4: Simplify right side
    118,402x = 9,963,591,517.17
  5. Step 5: Solve for x
    x = 9,963,591,517.17/118,402
  6. Step 6: Final answer
    x = 84,150.53

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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.