Home / 103,918.55-143,339.22-71,654.49

Finding the Fourth Proportional to 103,918.55, 143,339.22 and 71,654.49

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Solution

The fourth proportional to 103,918.55, 143,339.22 and 71,654.49 is: 98,836.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,918.55 : 143,339.22 = 71,654.49 : x
  2. Step 2: Convert to fraction form
    103,918.55/143,339.22 = 71,654.49/x
  3. Step 3: Cross multiply
    103,918.55x = 143,339.22 × 71,654.49
  4. Step 4: Simplify right side
    103,918.55x = 10,270,898,706.10
  5. Step 5: Solve for x
    x = 10,270,898,706.10/103,918.55
  6. Step 6: Final answer
    x = 98,836.05

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1.5x scale

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.