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Finding the Fourth Proportional to 118,102.40, 162,977.50 and 64,386.56

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Solution

The fourth proportional to 118,102.40, 162,977.50 and 64,386.56 is: 88,851.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,102.40 : 162,977.50 = 64,386.56 : x
  2. Step 2: Convert to fraction form
    118,102.40/162,977.50 = 64,386.56/x
  3. Step 3: Cross multiply
    118,102.40x = 162,977.50 × 64,386.56
  4. Step 4: Simplify right side
    118,102.40x = 10,493,560,582.40
  5. Step 5: Solve for x
    x = 10,493,560,582.40/118,102.40
  6. Step 6: Final answer
    x = 88,851.37

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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.