Home / 145,081.26-200,212.25-81,419.05

Finding the Fourth Proportional to 145,081.26, 200,212.25 and 81,419.05

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Solution

The fourth proportional to 145,081.26, 200,212.25 and 81,419.05 is: 112,358.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,081.26 : 200,212.25 = 81,419.05 : x
  2. Step 2: Convert to fraction form
    145,081.26/200,212.25 = 81,419.05/x
  3. Step 3: Cross multiply
    145,081.26x = 200,212.25 × 81,419.05
  4. Step 4: Simplify right side
    145,081.26x = 16,301,091,193.36
  5. Step 5: Solve for x
    x = 16,301,091,193.36/145,081.26
  6. Step 6: Final answer
    x = 112,358.35

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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.