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Finding the Fourth Proportional to 180,539.16, 270,842.58 and 80,703.30

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Solution

The fourth proportional to 180,539.16, 270,842.58 and 80,703.30 is: 121,070.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,539.16 : 270,842.58 = 80,703.30 : x
  2. Step 2: Convert to fraction form
    180,539.16/270,842.58 = 80,703.30/x
  3. Step 3: Cross multiply
    180,539.16x = 270,842.58 × 80,703.30
  4. Step 4: Simplify right side
    180,539.16x = 21,857,889,986.51
  5. Step 5: Solve for x
    x = 21,857,889,986.51/180,539.16
  6. Step 6: Final answer
    x = 121,070.08

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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.