Home / 122,419.60-183,629.40-102,590.80

Finding the Fourth Proportional to 122,419.60, 183,629.40 and 102,590.80

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Solution

The fourth proportional to 122,419.60, 183,629.40 and 102,590.80 is: 153,886.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,419.60 : 183,629.40 = 102,590.80 : x
  2. Step 2: Convert to fraction form
    122,419.60/183,629.40 = 102,590.80/x
  3. Step 3: Cross multiply
    122,419.60x = 183,629.40 × 102,590.80
  4. Step 4: Simplify right side
    122,419.60x = 18,838,687,049.52
  5. Step 5: Solve for x
    x = 18,838,687,049.52/122,419.60
  6. Step 6: Final answer
    x = 153,886.20

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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.