Home / 107,642.14-161,430.37-86,532.12

Finding the Fourth Proportional to 107,642.14, 161,430.37 and 86,532.12

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Solution

The fourth proportional to 107,642.14, 161,430.37 and 86,532.12 is: 129,771.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,642.14 : 161,430.37 = 86,532.12 : x
  2. Step 2: Convert to fraction form
    107,642.14/161,430.37 = 86,532.12/x
  3. Step 3: Cross multiply
    107,642.14x = 161,430.37 × 86,532.12
  4. Step 4: Simplify right side
    107,642.14x = 13,968,911,932.15
  5. Step 5: Solve for x
    x = 13,968,911,932.15/107,642.14
  6. Step 6: Final answer
    x = 129,771.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.