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Finding the Fourth Proportional to 135,030.55, 202,673.01 and 68,518.42

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Solution

The fourth proportional to 135,030.55, 202,673.01 and 68,518.42 is: 102,842.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,030.55 : 202,673.01 = 68,518.42 : x
  2. Step 2: Convert to fraction form
    135,030.55/202,673.01 = 68,518.42/x
  3. Step 3: Cross multiply
    135,030.55x = 202,673.01 × 68,518.42
  4. Step 4: Simplify right side
    135,030.55x = 13,886,834,421.84
  5. Step 5: Solve for x
    x = 13,886,834,421.84/135,030.55
  6. Step 6: Final answer
    x = 102,842.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.