Home / 161,990.37-243,067.55-109,289.12

Finding the Fourth Proportional to 161,990.37, 243,067.55 and 109,289.12

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Solution

The fourth proportional to 161,990.37, 243,067.55 and 109,289.12 is: 163,988.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,990.37 : 243,067.55 = 109,289.12 : x
  2. Step 2: Convert to fraction form
    161,990.37/243,067.55 = 109,289.12/x
  3. Step 3: Cross multiply
    161,990.37x = 243,067.55 × 109,289.12
  4. Step 4: Simplify right side
    161,990.37x = 26,564,636,878.27
  5. Step 5: Solve for x
    x = 26,564,636,878.27/161,990.37
  6. Step 6: Final answer
    x = 163,988.99

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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.