Home / 145,023.13-200,135.37-81,365.64

Finding the Fourth Proportional to 145,023.13, 200,135.37 and 81,365.64

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Solution

The fourth proportional to 145,023.13, 200,135.37 and 81,365.64 is: 112,286.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,023.13 : 200,135.37 = 81,365.64 : x
  2. Step 2: Convert to fraction form
    145,023.13/200,135.37 = 81,365.64/x
  3. Step 3: Cross multiply
    145,023.13x = 200,135.37 × 81,365.64
  4. Step 4: Simplify right side
    145,023.13x = 16,284,142,466.69
  5. Step 5: Solve for x
    x = 16,284,142,466.69/145,023.13
  6. Step 6: Final answer
    x = 112,286.52

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1.5x scale

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.