Home / 102,161.16-141,001.80-57,449.16

Finding the Fourth Proportional to 102,161.16, 141,001.80 and 57,449.16

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Solution

The fourth proportional to 102,161.16, 141,001.80 and 57,449.16 is: 79,290.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,161.16 : 141,001.80 = 57,449.16 : x
  2. Step 2: Convert to fraction form
    102,161.16/141,001.80 = 57,449.16/x
  3. Step 3: Cross multiply
    102,161.16x = 141,001.80 × 57,449.16
  4. Step 4: Simplify right side
    102,161.16x = 8,100,434,968.49
  5. Step 5: Solve for x
    x = 8,100,434,968.49/102,161.16
  6. Step 6: Final answer
    x = 79,290.75

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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.