Home / 134,104.20-201,309.90-78,731.40

Finding the Fourth Proportional to 134,104.20, 201,309.90 and 78,731.40

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Solution

The fourth proportional to 134,104.20, 201,309.90 and 78,731.40 is: 118,187.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,104.20 : 201,309.90 = 78,731.40 : x
  2. Step 2: Convert to fraction form
    134,104.20/201,309.90 = 78,731.40/x
  3. Step 3: Cross multiply
    134,104.20x = 201,309.90 × 78,731.40
  4. Step 4: Simplify right side
    134,104.20x = 15,849,410,260.86
  5. Step 5: Solve for x
    x = 15,849,410,260.86/134,104.20
  6. Step 6: Final answer
    x = 118,187.28

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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.