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Finding the Fourth Proportional to 103,988.44, 143,504.06 and 56,241.78

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Solution

The fourth proportional to 103,988.44, 143,504.06 and 56,241.78 is: 77,613.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,988.44 : 143,504.06 = 56,241.78 : x
  2. Step 2: Convert to fraction form
    103,988.44/143,504.06 = 56,241.78/x
  3. Step 3: Cross multiply
    103,988.44x = 143,504.06 × 56,241.78
  4. Step 4: Simplify right side
    103,988.44x = 8,070,922,952.28
  5. Step 5: Solve for x
    x = 8,070,922,952.28/103,988.44
  6. Step 6: Final answer
    x = 77,613.65

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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.