Home / 128,316.60-192,669.30-98,767.80

Finding the Fourth Proportional to 128,316.60, 192,669.30 and 98,767.80

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Solution

The fourth proportional to 128,316.60, 192,669.30 and 98,767.80 is: 148,301.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,316.60 : 192,669.30 = 98,767.80 : x
  2. Step 2: Convert to fraction form
    128,316.60/192,669.30 = 98,767.80/x
  3. Step 3: Cross multiply
    128,316.60x = 192,669.30 × 98,767.80
  4. Step 4: Simplify right side
    128,316.60x = 19,029,522,888.54
  5. Step 5: Solve for x
    x = 19,029,522,888.54/128,316.60
  6. Step 6: Final answer
    x = 148,301.33

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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.