Home / 156,912.40-235,368.60-90,557.20

Finding the Fourth Proportional to 156,912.40, 235,368.60 and 90,557.20

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Solution

The fourth proportional to 156,912.40, 235,368.60 and 90,557.20 is: 135,835.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,912.40 : 235,368.60 = 90,557.20 : x
  2. Step 2: Convert to fraction form
    156,912.40/235,368.60 = 90,557.20/x
  3. Step 3: Cross multiply
    156,912.40x = 235,368.60 × 90,557.20
  4. Step 4: Simplify right side
    156,912.40x = 21,314,321,383.92
  5. Step 5: Solve for x
    x = 21,314,321,383.92/156,912.40
  6. Step 6: Final answer
    x = 135,835.80

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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.