Home / 120,110.67-165,750.98-72,390.33

Finding the Fourth Proportional to 120,110.67, 165,750.98 and 72,390.33

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Solution

The fourth proportional to 120,110.67, 165,750.98 and 72,390.33 is: 99,897.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,110.67 : 165,750.98 = 72,390.33 : x
  2. Step 2: Convert to fraction form
    120,110.67/165,750.98 = 72,390.33/x
  3. Step 3: Cross multiply
    120,110.67x = 165,750.98 × 72,390.33
  4. Step 4: Simplify right side
    120,110.67x = 11,998,767,778.07
  5. Step 5: Solve for x
    x = 11,998,767,778.07/120,110.67
  6. Step 6: Final answer
    x = 99,897.60

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1.5x scale

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.