Home / 103,613.49-142,991.87-61,171.11

Finding the Fourth Proportional to 103,613.49, 142,991.87 and 61,171.11

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Solution

The fourth proportional to 103,613.49, 142,991.87 and 61,171.11 is: 84,419.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,613.49 : 142,991.87 = 61,171.11 : x
  2. Step 2: Convert to fraction form
    103,613.49/142,991.87 = 61,171.11/x
  3. Step 3: Cross multiply
    103,613.49x = 142,991.87 × 61,171.11
  4. Step 4: Simplify right side
    103,613.49x = 8,746,971,103.02
  5. Step 5: Solve for x
    x = 8,746,971,103.02/103,613.49
  6. Step 6: Final answer
    x = 84,419.23

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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.