Home / 129,027,504.40-193,541,256.60-81,251,760.40

Finding the Fourth Proportional to 129,027,504.40, 193,541,256.60 and 81,251,760.40

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Solution

The fourth proportional to 129,027,504.40, 193,541,256.60 and 81,251,760.40 is: 121,877,640.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,027,504.40 : 193,541,256.60 = 81,251,760.40 : x
  2. Step 2: Convert to fraction form
    129,027,504.40/193,541,256.60 = 81,251,760.40/x
  3. Step 3: Cross multiply
    129,027,504.40x = 193,541,256.60 × 81,251,760.40
  4. Step 4: Simplify right side
    129,027,504.40x = 15,725,567,808,778,120
  5. Step 5: Solve for x
    x = 15,725,567,808,778,120/129,027,504.40
  6. Step 6: Final answer
    x = 121,877,640.60

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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.