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Finding the Fourth Proportional to 121,308.48, 182,064.96 and 51,238.08

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Solution

The fourth proportional to 121,308.48, 182,064.96 and 51,238.08 is: 76,900.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,308.48 : 182,064.96 = 51,238.08 : x
  2. Step 2: Convert to fraction form
    121,308.48/182,064.96 = 51,238.08/x
  3. Step 3: Cross multiply
    121,308.48x = 182,064.96 × 51,238.08
  4. Step 4: Simplify right side
    121,308.48x = 9,328,658,985.68
  5. Step 5: Solve for x
    x = 9,328,658,985.68/121,308.48
  6. Step 6: Final answer
    x = 76,900.30

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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.