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Finding the Fourth Proportional to 138,666.03, 208,030.17 and 43,901.88

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Solution

The fourth proportional to 138,666.03, 208,030.17 and 43,901.88 is: 65,862.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,666.03 : 208,030.17 = 43,901.88 : x
  2. Step 2: Convert to fraction form
    138,666.03/208,030.17 = 43,901.88/x
  3. Step 3: Cross multiply
    138,666.03x = 208,030.17 × 43,901.88
  4. Step 4: Simplify right side
    138,666.03x = 9,132,915,559.72
  5. Step 5: Solve for x
    x = 9,132,915,559.72/138,666.03
  6. Step 6: Final answer
    x = 65,862.67

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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.