Home / 134,890.40-202,465.20-68,405.60

Finding the Fourth Proportional to 134,890.40, 202,465.20 and 68,405.60

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Solution

The fourth proportional to 134,890.40, 202,465.20 and 68,405.60 is: 102,674.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,890.40 : 202,465.20 = 68,405.60 : x
  2. Step 2: Convert to fraction form
    134,890.40/202,465.20 = 68,405.60/x
  3. Step 3: Cross multiply
    134,890.40x = 202,465.20 × 68,405.60
  4. Step 4: Simplify right side
    134,890.40x = 13,849,753,485.12
  5. Step 5: Solve for x
    x = 13,849,753,485.12/134,890.40
  6. Step 6: Final answer
    x = 102,674.12

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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.