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Finding the Fourth Proportional to 188,290.48, 259,840.52 and 103,407.52

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Solution

The fourth proportional to 188,290.48, 259,840.52 and 103,407.52 is: 142,702.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,290.48 : 259,840.52 = 103,407.52 : x
  2. Step 2: Convert to fraction form
    188,290.48/259,840.52 = 103,407.52/x
  3. Step 3: Cross multiply
    188,290.48x = 259,840.52 × 103,407.52
  4. Step 4: Simplify right side
    188,290.48x = 26,869,463,768.71
  5. Step 5: Solve for x
    x = 26,869,463,768.71/188,290.48
  6. Step 6: Final answer
    x = 142,702.19

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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.