Home / 121,022.40-181,533.60-76,699.20

Finding the Fourth Proportional to 121,022.40, 181,533.60 and 76,699.20

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Solution

The fourth proportional to 121,022.40, 181,533.60 and 76,699.20 is: 115,048.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,022.40 : 181,533.60 = 76,699.20 : x
  2. Step 2: Convert to fraction form
    121,022.40/181,533.60 = 76,699.20/x
  3. Step 3: Cross multiply
    121,022.40x = 181,533.60 × 76,699.20
  4. Step 4: Simplify right side
    121,022.40x = 13,923,481,893.12
  5. Step 5: Solve for x
    x = 13,923,481,893.12/121,022.40
  6. Step 6: Final answer
    x = 115,048.80

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1.5x scale

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.