Home / 125,513.10-188,268.45-30,743.70

Finding the Fourth Proportional to 125,513.10, 188,268.45 and 30,743.70

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Solution

The fourth proportional to 125,513.10, 188,268.45 and 30,743.70 is: 46,115.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,513.10 : 188,268.45 = 30,743.70 : x
  2. Step 2: Convert to fraction form
    125,513.10/188,268.45 = 30,743.70/x
  3. Step 3: Cross multiply
    125,513.10x = 188,268.45 × 30,743.70
  4. Step 4: Simplify right side
    125,513.10x = 5,788,068,746.27
  5. Step 5: Solve for x
    x = 5,788,068,746.27/125,513.10
  6. Step 6: Final answer
    x = 46,115.26

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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.