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Finding the Fourth Proportional to 130,912.60, 196,368.90 and 47,795.80

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Solution

The fourth proportional to 130,912.60, 196,368.90 and 47,795.80 is: 71,693.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,912.60 : 196,368.90 = 47,795.80 : x
  2. Step 2: Convert to fraction form
    130,912.60/196,368.90 = 47,795.80/x
  3. Step 3: Cross multiply
    130,912.60x = 196,368.90 × 47,795.80
  4. Step 4: Simplify right side
    130,912.60x = 9,385,608,670.62
  5. Step 5: Solve for x
    x = 9,385,608,670.62/130,912.60
  6. Step 6: Final answer
    x = 71,693.70

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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.