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Finding the Fourth Proportional to 122,586.40, 183,879.60 and 43,703.20

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Solution

The fourth proportional to 122,586.40, 183,879.60 and 43,703.20 is: 65,554.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,586.40 : 183,879.60 = 43,703.20 : x
  2. Step 2: Convert to fraction form
    122,586.40/183,879.60 = 43,703.20/x
  3. Step 3: Cross multiply
    122,586.40x = 183,879.60 × 43,703.20
  4. Step 4: Simplify right side
    122,586.40x = 8,036,126,934.72
  5. Step 5: Solve for x
    x = 8,036,126,934.72/122,586.40
  6. Step 6: Final answer
    x = 65,554.80

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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.