Home / 135,825.51-187,430.08-82,140.12

Finding the Fourth Proportional to 135,825.51, 187,430.08 and 82,140.12

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Solution

The fourth proportional to 135,825.51, 187,430.08 and 82,140.12 is: 113,347.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,825.51 : 187,430.08 = 82,140.12 : x
  2. Step 2: Convert to fraction form
    135,825.51/187,430.08 = 82,140.12/x
  3. Step 3: Cross multiply
    135,825.51x = 187,430.08 × 82,140.12
  4. Step 4: Simplify right side
    135,825.51x = 15,395,529,262.81
  5. Step 5: Solve for x
    x = 15,395,529,262.81/135,825.51
  6. Step 6: Final answer
    x = 113,347.85

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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.