Home / 155,420.09-214,480.04-91,761.98

Finding the Fourth Proportional to 155,420.09, 214,480.04 and 91,761.98

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Solution

The fourth proportional to 155,420.09, 214,480.04 and 91,761.98 is: 126,631.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,420.09 : 214,480.04 = 91,761.98 : x
  2. Step 2: Convert to fraction form
    155,420.09/214,480.04 = 91,761.98/x
  3. Step 3: Cross multiply
    155,420.09x = 214,480.04 × 91,761.98
  4. Step 4: Simplify right side
    155,420.09x = 19,681,111,609.67
  5. Step 5: Solve for x
    x = 19,681,111,609.67/155,420.09
  6. Step 6: Final answer
    x = 126,631.71

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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.