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Finding the Fourth Proportional to 130,010.20, 194,861.70 and 55,130.20

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Solution

The fourth proportional to 130,010.20, 194,861.70 and 55,130.20 is: 82,630.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,010.20 : 194,861.70 = 55,130.20 : x
  2. Step 2: Convert to fraction form
    130,010.20/194,861.70 = 55,130.20/x
  3. Step 3: Cross multiply
    130,010.20x = 194,861.70 × 55,130.20
  4. Step 4: Simplify right side
    130,010.20x = 10,742,764,493.34
  5. Step 5: Solve for x
    x = 10,742,764,493.34/130,010.20
  6. Step 6: Final answer
    x = 82,630.17

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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.