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Finding the Fourth Proportional to 121,363.85, 181,991.10 and 46,459.10

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Solution

The fourth proportional to 121,363.85, 181,991.10 and 46,459.10 is: 69,667.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,363.85 : 181,991.10 = 46,459.10 : x
  2. Step 2: Convert to fraction form
    121,363.85/181,991.10 = 46,459.10/x
  3. Step 3: Cross multiply
    121,363.85x = 181,991.10 × 46,459.10
  4. Step 4: Simplify right side
    121,363.85x = 8,455,142,714.01
  5. Step 5: Solve for x
    x = 8,455,142,714.01/121,363.85
  6. Step 6: Final answer
    x = 69,667.72

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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.