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Finding the Fourth Proportional to 118,064, 162,922.40 and 64,348.80

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Solution

The fourth proportional to 118,064, 162,922.40 and 64,348.80 is: 88,798.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,064 : 162,922.40 = 64,348.80 : x
  2. Step 2: Convert to fraction form
    118,064/162,922.40 = 64,348.80/x
  3. Step 3: Cross multiply
    118,064x = 162,922.40 × 64,348.80
  4. Step 4: Simplify right side
    118,064x = 10,483,860,933.12
  5. Step 5: Solve for x
    x = 10,483,860,933.12/118,064
  6. Step 6: Final answer
    x = 88,798.12

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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.