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Finding the Fourth Proportional to 162,309.81, 223,988.25 and 88,723.74

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Solution

The fourth proportional to 162,309.81, 223,988.25 and 88,723.74 is: 122,439.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,309.81 : 223,988.25 = 88,723.74 : x
  2. Step 2: Convert to fraction form
    162,309.81/223,988.25 = 88,723.74/x
  3. Step 3: Cross multiply
    162,309.81x = 223,988.25 × 88,723.74
  4. Step 4: Simplify right side
    162,309.81x = 19,873,075,528.89
  5. Step 5: Solve for x
    x = 19,873,075,528.89/162,309.81
  6. Step 6: Final answer
    x = 122,439.15

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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.