Home / 121,201.60-181,778.10-58,021.60

Finding the Fourth Proportional to 121,201.60, 181,778.10 and 58,021.60

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Solution

The fourth proportional to 121,201.60, 181,778.10 and 58,021.60 is: 87,020.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,201.60 : 181,778.10 = 58,021.60 : x
  2. Step 2: Convert to fraction form
    121,201.60/181,778.10 = 58,021.60/x
  3. Step 3: Cross multiply
    121,201.60x = 181,778.10 × 58,021.60
  4. Step 4: Simplify right side
    121,201.60x = 10,547,056,206.96
  5. Step 5: Solve for x
    x = 10,547,056,206.96/121,201.60
  6. Step 6: Final answer
    x = 87,020.77

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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.