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Finding the Fourth Proportional to 141,707.60, 212,791.80 and 102,539.60

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Solution

The fourth proportional to 141,707.60, 212,791.80 and 102,539.60 is: 153,976.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,707.60 : 212,791.80 = 102,539.60 : x
  2. Step 2: Convert to fraction form
    141,707.60/212,791.80 = 102,539.60/x
  3. Step 3: Cross multiply
    141,707.60x = 212,791.80 × 102,539.60
  4. Step 4: Simplify right side
    141,707.60x = 21,819,586,055.28
  5. Step 5: Solve for x
    x = 21,819,586,055.28/141,707.60
  6. Step 6: Final answer
    x = 153,976.12

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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.