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Finding the Fourth Proportional to 103,924.55, 143,347.50 and 71,660.49

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Solution

The fourth proportional to 103,924.55, 143,347.50 and 71,660.49 is: 98,844.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,924.55 : 143,347.50 = 71,660.49 : x
  2. Step 2: Convert to fraction form
    103,924.55/143,347.50 = 71,660.49/x
  3. Step 3: Cross multiply
    103,924.55x = 143,347.50 × 71,660.49
  4. Step 4: Simplify right side
    103,924.55x = 10,272,352,090.28
  5. Step 5: Solve for x
    x = 10,272,352,090.28/103,924.55
  6. Step 6: Final answer
    x = 98,844.33

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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.