Home / 124,987.70-172,563.54-111,535.86

Finding the Fourth Proportional to 124,987.70, 172,563.54 and 111,535.86

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Solution

The fourth proportional to 124,987.70, 172,563.54 and 111,535.86 is: 153,991.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,987.70 : 172,563.54 = 111,535.86 : x
  2. Step 2: Convert to fraction form
    124,987.70/172,563.54 = 111,535.86/x
  3. Step 3: Cross multiply
    124,987.70x = 172,563.54 × 111,535.86
  4. Step 4: Simplify right side
    124,987.70x = 19,247,022,838.54
  5. Step 5: Solve for x
    x = 19,247,022,838.54/124,987.70
  6. Step 6: Final answer
    x = 153,991.34

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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.