Home / 130,688.78-195,944.46-66,489.14

Finding the Fourth Proportional to 130,688.78, 195,944.46 and 66,489.14

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Solution

The fourth proportional to 130,688.78, 195,944.46 and 66,489.14 is: 99,688.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,688.78 : 195,944.46 = 66,489.14 : x
  2. Step 2: Convert to fraction form
    130,688.78/195,944.46 = 66,489.14/x
  3. Step 3: Cross multiply
    130,688.78x = 195,944.46 × 66,489.14
  4. Step 4: Simplify right side
    130,688.78x = 13,028,178,633.16
  5. Step 5: Solve for x
    x = 13,028,178,633.16/130,688.78
  6. Step 6: Final answer
    x = 99,688.58

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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.