Home / 138,964.96-208,459.74-39,126.01

Finding the Fourth Proportional to 138,964.96, 208,459.74 and 39,126.01

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Solution

The fourth proportional to 138,964.96, 208,459.74 and 39,126.01 is: 58,692.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,964.96 : 208,459.74 = 39,126.01 : x
  2. Step 2: Convert to fraction form
    138,964.96/208,459.74 = 39,126.01/x
  3. Step 3: Cross multiply
    138,964.96x = 208,459.74 × 39,126.01
  4. Step 4: Simplify right side
    138,964.96x = 8,156,197,871.84
  5. Step 5: Solve for x
    x = 8,156,197,871.84/138,964.96
  6. Step 6: Final answer
    x = 58,692.48

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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.