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Finding the Fourth Proportional to 252,145.32, 347,955.42 and 138,968.08

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Solution

The fourth proportional to 252,145.32, 347,955.42 and 138,968.08 is: 191,773.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,145.32 : 347,955.42 = 138,968.08 : x
  2. Step 2: Convert to fraction form
    252,145.32/347,955.42 = 138,968.08/x
  3. Step 3: Cross multiply
    252,145.32x = 347,955.42 × 138,968.08
  4. Step 4: Simplify right side
    252,145.32x = 48,354,696,642.99
  5. Step 5: Solve for x
    x = 48,354,696,642.99/252,145.32
  6. Step 6: Final answer
    x = 191,773.13

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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.