Home / 145,159.85-200,315.44-81,500.33

Finding the Fourth Proportional to 145,159.85, 200,315.44 and 81,500.33

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Solution

The fourth proportional to 145,159.85, 200,315.44 and 81,500.33 is: 112,467.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,159.85 : 200,315.44 = 81,500.33 : x
  2. Step 2: Convert to fraction form
    145,159.85/200,315.44 = 81,500.33/x
  3. Step 3: Cross multiply
    145,159.85x = 200,315.44 × 81,500.33
  4. Step 4: Simplify right side
    145,159.85x = 16,325,774,464.10
  5. Step 5: Solve for x
    x = 16,325,774,464.10/145,159.85
  6. Step 6: Final answer
    x = 112,467.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.