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Finding the Fourth Proportional to 103,998.79, 143,517.79 and 56,252.01

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Solution

The fourth proportional to 103,998.79, 143,517.79 and 56,252.01 is: 77,627.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,998.79 : 143,517.79 = 56,252.01 : x
  2. Step 2: Convert to fraction form
    103,998.79/143,517.79 = 56,252.01/x
  3. Step 3: Cross multiply
    103,998.79x = 143,517.79 × 56,252.01
  4. Step 4: Simplify right side
    103,998.79x = 8,073,164,158.26
  5. Step 5: Solve for x
    x = 8,073,164,158.26/103,998.79
  6. Step 6: Final answer
    x = 77,627.48

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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.