Home / 102,116.13-140,917.80-55,547.79

Finding the Fourth Proportional to 102,116.13, 140,917.80 and 55,547.79

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Solution

The fourth proportional to 102,116.13, 140,917.80 and 55,547.79 is: 76,654.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,116.13 : 140,917.80 = 55,547.79 : x
  2. Step 2: Convert to fraction form
    102,116.13/140,917.80 = 55,547.79/x
  3. Step 3: Cross multiply
    102,116.13x = 140,917.80 × 55,547.79
  4. Step 4: Simplify right side
    102,116.13x = 7,827,672,361.66
  5. Step 5: Solve for x
    x = 7,827,672,361.66/102,116.13
  6. Step 6: Final answer
    x = 76,654.61

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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.