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Finding the Fourth Proportional to 118,901.60, 178,201.20 and 48,701.60

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Solution

The fourth proportional to 118,901.60, 178,201.20 and 48,701.60 is: 72,990.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,901.60 : 178,201.20 = 48,701.60 : x
  2. Step 2: Convert to fraction form
    118,901.60/178,201.20 = 48,701.60/x
  3. Step 3: Cross multiply
    118,901.60x = 178,201.20 × 48,701.60
  4. Step 4: Simplify right side
    118,901.60x = 8,678,683,561.92
  5. Step 5: Solve for x
    x = 8,678,683,561.92/118,901.60
  6. Step 6: Final answer
    x = 72,990.47

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1.5x scale

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.