Home / 121,418,979.60-182,128,469.40-30,542,568.60

Finding the Fourth Proportional to 121,418,979.60, 182,128,469.40 and 30,542,568.60

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Solution

The fourth proportional to 121,418,979.60, 182,128,469.40 and 30,542,568.60 is: 45,813,852.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,418,979.60 : 182,128,469.40 = 30,542,568.60 : x
  2. Step 2: Convert to fraction form
    121,418,979.60/182,128,469.40 = 30,542,568.60/x
  3. Step 3: Cross multiply
    121,418,979.60x = 182,128,469.40 × 30,542,568.60
  4. Step 4: Simplify right side
    121,418,979.60x = 5,562,671,270,662,501
  5. Step 5: Solve for x
    x = 5,562,671,270,662,501/121,418,979.60
  6. Step 6: Final answer
    x = 45,813,852.90

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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.