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Finding the Fourth Proportional to 118,699.60, 178,150.20 and 48,629.20

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Solution

The fourth proportional to 118,699.60, 178,150.20 and 48,629.20 is: 72,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,699.60 : 178,150.20 = 48,629.20 : x
  2. Step 2: Convert to fraction form
    118,699.60/178,150.20 = 48,629.20/x
  3. Step 3: Cross multiply
    118,699.60x = 178,150.20 × 48,629.20
  4. Step 4: Simplify right side
    118,699.60x = 8,663,301,705.84
  5. Step 5: Solve for x
    x = 8,663,301,705.84/118,699.60
  6. Step 6: Final answer
    x = 72,985.10

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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.