Home / 161,989.25-243,065.86-109,288.01

Finding the Fourth Proportional to 161,989.25, 243,065.86 and 109,288.01

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Solution

The fourth proportional to 161,989.25, 243,065.86 and 109,288.01 is: 163,987.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,989.25 : 243,065.86 = 109,288.01 : x
  2. Step 2: Convert to fraction form
    161,989.25/243,065.86 = 109,288.01/x
  3. Step 3: Cross multiply
    161,989.25x = 243,065.86 × 109,288.01
  4. Step 4: Simplify right side
    161,989.25x = 26,564,184,472.78
  5. Step 5: Solve for x
    x = 26,564,184,472.78/161,989.25
  6. Step 6: Final answer
    x = 163,987.33

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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.