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Finding the Fourth Proportional to 121,343.84, 181,891.04 and 46,446.40

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Solution

The fourth proportional to 121,343.84, 181,891.04 and 46,446.40 is: 69,621.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,343.84 : 181,891.04 = 46,446.40 : x
  2. Step 2: Convert to fraction form
    121,343.84/181,891.04 = 46,446.40/x
  3. Step 3: Cross multiply
    121,343.84x = 181,891.04 × 46,446.40
  4. Step 4: Simplify right side
    121,343.84x = 8,448,184,000.26
  5. Step 5: Solve for x
    x = 8,448,184,000.26/121,343.84
  6. Step 6: Final answer
    x = 69,621.86

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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.