Home / 127,868,047.78-191,850,389.64-76,785,676.42

Finding the Fourth Proportional to 127,868,047.78, 191,850,389.64 and 76,785,676.42

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Solution

The fourth proportional to 127,868,047.78, 191,850,389.64 and 76,785,676.42 is: 115,207,529.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,868,047.78 : 191,850,389.64 = 76,785,676.42 : x
  2. Step 2: Convert to fraction form
    127,868,047.78/191,850,389.64 = 76,785,676.42/x
  3. Step 3: Cross multiply
    127,868,047.78x = 191,850,389.64 × 76,785,676.42
  4. Step 4: Simplify right side
    127,868,047.78x = 14,731,361,939,947,960
  5. Step 5: Solve for x
    x = 14,731,361,939,947,960/127,868,047.78
  6. Step 6: Final answer
    x = 115,207,529.92

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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.