Home / 145,452.05-200,725.04-81,789.29

Finding the Fourth Proportional to 145,452.05, 200,725.04 and 81,789.29

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Solution

The fourth proportional to 145,452.05, 200,725.04 and 81,789.29 is: 112,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,452.05 : 200,725.04 = 81,789.29 : x
  2. Step 2: Convert to fraction form
    145,452.05/200,725.04 = 81,789.29/x
  3. Step 3: Cross multiply
    145,452.05x = 200,725.04 × 81,789.29
  4. Step 4: Simplify right side
    145,452.05x = 16,417,158,804.16
  5. Step 5: Solve for x
    x = 16,417,158,804.16/145,452.05
  6. Step 6: Final answer
    x = 112,869.90

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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.