Home / 134,030.20-201,198.90-78,657.40

Finding the Fourth Proportional to 134,030.20, 201,198.90 and 78,657.40

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Solution

The fourth proportional to 134,030.20, 201,198.90 and 78,657.40 is: 118,076.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,030.20 : 201,198.90 = 78,657.40 : x
  2. Step 2: Convert to fraction form
    134,030.20/201,198.90 = 78,657.40/x
  3. Step 3: Cross multiply
    134,030.20x = 201,198.90 × 78,657.40
  4. Step 4: Simplify right side
    134,030.20x = 15,825,782,356.86
  5. Step 5: Solve for x
    x = 15,825,782,356.86/134,030.20
  6. Step 6: Final answer
    x = 118,076.24

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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.