Home / 161,991.76-243,069.60-109,290.52

Finding the Fourth Proportional to 161,991.76, 243,069.60 and 109,290.52

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Solution

The fourth proportional to 161,991.76, 243,069.60 and 109,290.52 is: 163,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,991.76 : 243,069.60 = 109,290.52 : x
  2. Step 2: Convert to fraction form
    161,991.76/243,069.60 = 109,290.52/x
  3. Step 3: Cross multiply
    161,991.76x = 243,069.60 × 109,290.52
  4. Step 4: Simplify right side
    161,991.76x = 26,565,202,980.19
  5. Step 5: Solve for x
    x = 26,565,202,980.19/161,991.76
  6. Step 6: Final answer
    x = 163,991.08

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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.