Home / 120,013,351.86-165,619,220.76-65,009,208.36

Finding the Fourth Proportional to 120,013,351.86, 165,619,220.76 and 65,009,208.36

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Solution

The fourth proportional to 120,013,351.86, 165,619,220.76 and 65,009,208.36 is: 89,713,138.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,013,351.86 : 165,619,220.76 = 65,009,208.36 : x
  2. Step 2: Convert to fraction form
    120,013,351.86/165,619,220.76 = 65,009,208.36/x
  3. Step 3: Cross multiply
    120,013,351.86x = 165,619,220.76 × 65,009,208.36
  4. Step 4: Simplify right side
    120,013,351.86x = 10,766,774,430,807,676
  5. Step 5: Solve for x
    x = 10,766,774,430,807,676/120,013,351.86
  6. Step 6: Final answer
    x = 89,713,138.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.