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Finding the Fourth Proportional to 121,408.58, 181,957.01 and 58,133.89

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Solution

The fourth proportional to 121,408.58, 181,957.01 and 58,133.89 is: 87,126.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,408.58 : 181,957.01 = 58,133.89 : x
  2. Step 2: Convert to fraction form
    121,408.58/181,957.01 = 58,133.89/x
  3. Step 3: Cross multiply
    121,408.58x = 181,957.01 × 58,133.89
  4. Step 4: Simplify right side
    121,408.58x = 10,577,868,949.40
  5. Step 5: Solve for x
    x = 10,577,868,949.40/121,408.58
  6. Step 6: Final answer
    x = 87,126.21

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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.