Home / 115,489.96-158,218.58-111,172.45

Finding the Fourth Proportional to 115,489.96, 158,218.58 and 111,172.45

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Solution

The fourth proportional to 115,489.96, 158,218.58 and 111,172.45 is: 152,303.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,489.96 : 158,218.58 = 111,172.45 : x
  2. Step 2: Convert to fraction form
    115,489.96/158,218.58 = 111,172.45/x
  3. Step 3: Cross multiply
    115,489.96x = 158,218.58 × 111,172.45
  4. Step 4: Simplify right side
    115,489.96x = 17,589,547,174.12
  5. Step 5: Solve for x
    x = 17,589,547,174.12/115,489.96
  6. Step 6: Final answer
    x = 152,303.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.