Home / 103,618.10-142,987.46-61,161.14

Finding the Fourth Proportional to 103,618.10, 142,987.46 and 61,161.14

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Solution

The fourth proportional to 103,618.10, 142,987.46 and 61,161.14 is: 84,399.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,618.10 : 142,987.46 = 61,161.14 : x
  2. Step 2: Convert to fraction form
    103,618.10/142,987.46 = 61,161.14/x
  3. Step 3: Cross multiply
    103,618.10x = 142,987.46 × 61,161.14
  4. Step 4: Simplify right side
    103,618.10x = 8,745,276,059.30
  5. Step 5: Solve for x
    x = 8,745,276,059.30/103,618.10
  6. Step 6: Final answer
    x = 84,399.12

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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.