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Finding the Fourth Proportional to 130,189.70, 195,113.90 and 74,055.62

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Solution

The fourth proportional to 130,189.70, 195,113.90 and 74,055.62 is: 110,986.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,189.70 : 195,113.90 = 74,055.62 : x
  2. Step 2: Convert to fraction form
    130,189.70/195,113.90 = 74,055.62/x
  3. Step 3: Cross multiply
    130,189.70x = 195,113.90 × 74,055.62
  4. Step 4: Simplify right side
    130,189.70x = 14,449,280,835.12
  5. Step 5: Solve for x
    x = 14,449,280,835.12/130,189.70
  6. Step 6: Final answer
    x = 110,986.36

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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.