Home / 111,501.09-153,999.21-73,430.79

Finding the Fourth Proportional to 111,501.09, 153,999.21 and 73,430.79

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Solution

The fourth proportional to 111,501.09, 153,999.21 and 73,430.79 is: 101,418.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,501.09 : 153,999.21 = 73,430.79 : x
  2. Step 2: Convert to fraction form
    111,501.09/153,999.21 = 73,430.79/x
  3. Step 3: Cross multiply
    111,501.09x = 153,999.21 × 73,430.79
  4. Step 4: Simplify right side
    111,501.09x = 11,308,283,649.68
  5. Step 5: Solve for x
    x = 11,308,283,649.68/111,501.09
  6. Step 6: Final answer
    x = 101,418.59

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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.