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Finding the Fourth Proportional to 130,009.70, 195,069.23 and 70,887.80

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Solution

The fourth proportional to 130,009.70, 195,069.23 and 70,887.80 is: 106,361.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,009.70 : 195,069.23 = 70,887.80 : x
  2. Step 2: Convert to fraction form
    130,009.70/195,069.23 = 70,887.80/x
  3. Step 3: Cross multiply
    130,009.70x = 195,069.23 × 70,887.80
  4. Step 4: Simplify right side
    130,009.70x = 13,828,028,562.39
  5. Step 5: Solve for x
    x = 13,828,028,562.39/130,009.70
  6. Step 6: Final answer
    x = 106,361.51

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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.