Home / 107,985,786.40-161,992,887.60-39,876,320.80

Finding the Fourth Proportional to 107,985,786.40, 161,992,887.60 and 39,876,320.80

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Solution

The fourth proportional to 107,985,786.40, 161,992,887.60 and 39,876,320.80 is: 59,819,727.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,985,786.40 : 161,992,887.60 = 39,876,320.80 : x
  2. Step 2: Convert to fraction form
    107,985,786.40/161,992,887.60 = 39,876,320.80/x
  3. Step 3: Cross multiply
    107,985,786.40x = 161,992,887.60 × 39,876,320.80
  4. Step 4: Simplify right side
    107,985,786.40x = 6,459,680,353,255,941
  5. Step 5: Solve for x
    x = 6,459,680,353,255,941/107,985,786.40
  6. Step 6: Final answer
    x = 59,819,727.84

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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.