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Finding the Fourth Proportional to 104,364.60, 144,125.43 and 72,181.68

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Solution

The fourth proportional to 104,364.60, 144,125.43 and 72,181.68 is: 99,681.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,364.60 : 144,125.43 = 72,181.68 : x
  2. Step 2: Convert to fraction form
    104,364.60/144,125.43 = 72,181.68/x
  3. Step 3: Cross multiply
    104,364.60x = 144,125.43 × 72,181.68
  4. Step 4: Simplify right side
    104,364.60x = 10,403,215,668.12
  5. Step 5: Solve for x
    x = 10,403,215,668.12/104,364.60
  6. Step 6: Final answer
    x = 99,681.46

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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.