Home / 120,315,813.60-166,035,360.24-65,311,188.96

Finding the Fourth Proportional to 120,315,813.60, 166,035,360.24 and 65,311,188.96

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Solution

The fourth proportional to 120,315,813.60, 166,035,360.24 and 65,311,188.96 is: 90,129,189.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,315,813.60 : 166,035,360.24 = 65,311,188.96 : x
  2. Step 2: Convert to fraction form
    120,315,813.60/166,035,360.24 = 65,311,188.96/x
  3. Step 3: Cross multiply
    120,315,813.60x = 166,035,360.24 × 65,311,188.96
  4. Step 4: Simplify right side
    120,315,813.60x = 10,843,966,786,676,312
  5. Step 5: Solve for x
    x = 10,843,966,786,676,312/120,315,813.60
  6. Step 6: Final answer
    x = 90,129,189.69

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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.