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Finding the Fourth Proportional to 118,108.34, 162,989.39 and 64,393.34

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Solution

The fourth proportional to 118,108.34, 162,989.39 and 64,393.34 is: 88,862.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,108.34 : 162,989.39 = 64,393.34 : x
  2. Step 2: Convert to fraction form
    118,108.34/162,989.39 = 64,393.34/x
  3. Step 3: Cross multiply
    118,108.34x = 162,989.39 × 64,393.34
  4. Step 4: Simplify right side
    118,108.34x = 10,495,430,069.75
  5. Step 5: Solve for x
    x = 10,495,430,069.75/118,108.34
  6. Step 6: Final answer
    x = 88,862.74

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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.