Home / 121,939.36-182,928.02-72,055.40

Finding the Fourth Proportional to 121,939.36, 182,928.02 and 72,055.40

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Solution

The fourth proportional to 121,939.36, 182,928.02 and 72,055.40 is: 108,094.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,939.36 : 182,928.02 = 72,055.40 : x
  2. Step 2: Convert to fraction form
    121,939.36/182,928.02 = 72,055.40/x
  3. Step 3: Cross multiply
    121,939.36x = 182,928.02 × 72,055.40
  4. Step 4: Simplify right side
    121,939.36x = 13,180,950,377.39
  5. Step 5: Solve for x
    x = 13,180,950,377.39/121,939.36
  6. Step 6: Final answer
    x = 108,094.31

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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.