Home / 134,438.52-201,435.90-78,120.54

Finding the Fourth Proportional to 134,438.52, 201,435.90 and 78,120.54

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Solution

The fourth proportional to 134,438.52, 201,435.90 and 78,120.54 is: 117,051.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,438.52 : 201,435.90 = 78,120.54 : x
  2. Step 2: Convert to fraction form
    134,438.52/201,435.90 = 78,120.54/x
  3. Step 3: Cross multiply
    134,438.52x = 201,435.90 × 78,120.54
  4. Step 4: Simplify right side
    134,438.52x = 15,736,281,283.39
  5. Step 5: Solve for x
    x = 15,736,281,283.39/134,438.52
  6. Step 6: Final answer
    x = 117,051.88

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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.