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Finding the Fourth Proportional to 134,443.80, 201,708.90 and 90,120.60

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Solution

The fourth proportional to 134,443.80, 201,708.90 and 90,120.60 is: 135,209.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,443.80 : 201,708.90 = 90,120.60 : x
  2. Step 2: Convert to fraction form
    134,443.80/201,708.90 = 90,120.60/x
  3. Step 3: Cross multiply
    134,443.80x = 201,708.90 × 90,120.60
  4. Step 4: Simplify right side
    134,443.80x = 18,178,127,093.34
  5. Step 5: Solve for x
    x = 18,178,127,093.34/134,443.80
  6. Step 6: Final answer
    x = 135,209.86

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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.