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Finding the Fourth Proportional to 188,291.08, 259,842.90 and 103,407.40

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Solution

The fourth proportional to 188,291.08, 259,842.90 and 103,407.40 is: 142,702.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,291.08 : 259,842.90 = 103,407.40 : x
  2. Step 2: Convert to fraction form
    188,291.08/259,842.90 = 103,407.40/x
  3. Step 3: Cross multiply
    188,291.08x = 259,842.90 × 103,407.40
  4. Step 4: Simplify right side
    188,291.08x = 26,869,678,697.46
  5. Step 5: Solve for x
    x = 26,869,678,697.46/188,291.08
  6. Step 6: Final answer
    x = 142,702.88

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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.