Home / 137,867.60-206,801.40-90,628.40

Finding the Fourth Proportional to 137,867.60, 206,801.40 and 90,628.40

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Solution

The fourth proportional to 137,867.60, 206,801.40 and 90,628.40 is: 135,942.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,867.60 : 206,801.40 = 90,628.40 : x
  2. Step 2: Convert to fraction form
    137,867.60/206,801.40 = 90,628.40/x
  3. Step 3: Cross multiply
    137,867.60x = 206,801.40 × 90,628.40
  4. Step 4: Simplify right side
    137,867.60x = 18,742,079,999.76
  5. Step 5: Solve for x
    x = 18,742,079,999.76/137,867.60
  6. Step 6: Final answer
    x = 135,942.60

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1.5x scale

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.