Home / 121,618,737.31-167,831,783.15-65,863,704.67

Finding the Fourth Proportional to 121,618,737.31, 167,831,783.15 and 65,863,704.67

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Solution

The fourth proportional to 121,618,737.31, 167,831,783.15 and 65,863,704.67 is: 90,890,789.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,618,737.31 : 167,831,783.15 = 65,863,704.67 : x
  2. Step 2: Convert to fraction form
    121,618,737.31/167,831,783.15 = 65,863,704.67/x
  3. Step 3: Cross multiply
    121,618,737.31x = 167,831,783.15 × 65,863,704.67
  4. Step 4: Simplify right side
    121,618,737.31x = 11,054,023,000,011,974
  5. Step 5: Solve for x
    x = 11,054,023,000,011,974/121,618,737.31
  6. Step 6: Final answer
    x = 90,890,789.07

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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.