Home / 156,939.60-235,409.40-89,288.40

Finding the Fourth Proportional to 156,939.60, 235,409.40 and 89,288.40

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Solution

The fourth proportional to 156,939.60, 235,409.40 and 89,288.40 is: 133,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,939.60 : 235,409.40 = 89,288.40 : x
  2. Step 2: Convert to fraction form
    156,939.60/235,409.40 = 89,288.40/x
  3. Step 3: Cross multiply
    156,939.60x = 235,409.40 × 89,288.40
  4. Step 4: Simplify right side
    156,939.60x = 21,019,328,670.96
  5. Step 5: Solve for x
    x = 21,019,328,670.96/156,939.60
  6. Step 6: Final answer
    x = 133,932.60

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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.