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Finding the Fourth Proportional to 70,129.54, 105,194.32 and 17,539.04

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Solution

The fourth proportional to 70,129.54, 105,194.32 and 17,539.04 is: 26,308.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,129.54 : 105,194.32 = 17,539.04 : x
  2. Step 2: Convert to fraction form
    70,129.54/105,194.32 = 17,539.04/x
  3. Step 3: Cross multiply
    70,129.54x = 105,194.32 × 17,539.04
  4. Step 4: Simplify right side
    70,129.54x = 1,845,007,386.25
  5. Step 5: Solve for x
    x = 1,845,007,386.25/70,129.54
  6. Step 6: Final answer
    x = 26,308.56

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1.5x scale

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.