Home / 121,415.64-182,012.52-42,486.81

Finding the Fourth Proportional to 121,415.64, 182,012.52 and 42,486.81

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Solution

The fourth proportional to 121,415.64, 182,012.52 and 42,486.81 is: 63,691.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,415.64 : 182,012.52 = 42,486.81 : x
  2. Step 2: Convert to fraction form
    121,415.64/182,012.52 = 42,486.81/x
  3. Step 3: Cross multiply
    121,415.64x = 182,012.52 × 42,486.81
  4. Step 4: Simplify right side
    121,415.64x = 7,733,131,354.86
  5. Step 5: Solve for x
    x = 7,733,131,354.86/121,415.64
  6. Step 6: Final answer
    x = 63,691.39

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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.