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Finding the Fourth Proportional to 186,878.72, 257,802.98 and 122,319.56

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Solution

The fourth proportional to 186,878.72, 257,802.98 and 122,319.56 is: 168,742.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,878.72 : 257,802.98 = 122,319.56 : x
  2. Step 2: Convert to fraction form
    186,878.72/257,802.98 = 122,319.56/x
  3. Step 3: Cross multiply
    186,878.72x = 257,802.98 × 122,319.56
  4. Step 4: Simplify right side
    186,878.72x = 31,534,347,080.29
  5. Step 5: Solve for x
    x = 31,534,347,080.29/186,878.72
  6. Step 6: Final answer
    x = 168,742.31

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.