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Finding the Fourth Proportional to 107,969.55, 161,954.34 and 57,980.88

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Solution

The fourth proportional to 107,969.55, 161,954.34 and 57,980.88 is: 86,971.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,969.55 : 161,954.34 = 57,980.88 : x
  2. Step 2: Convert to fraction form
    107,969.55/161,954.34 = 57,980.88/x
  3. Step 3: Cross multiply
    107,969.55x = 161,954.34 × 57,980.88
  4. Step 4: Simplify right side
    107,969.55x = 9,390,255,153.02
  5. Step 5: Solve for x
    x = 9,390,255,153.02/107,969.55
  6. Step 6: Final answer
    x = 86,971.33

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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.