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Finding the Fourth Proportional to 124,012.28, 186,101.15 and 79,670.86

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Solution

The fourth proportional to 124,012.28, 186,101.15 and 79,670.86 is: 119,559.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,012.28 : 186,101.15 = 79,670.86 : x
  2. Step 2: Convert to fraction form
    124,012.28/186,101.15 = 79,670.86/x
  3. Step 3: Cross multiply
    124,012.28x = 186,101.15 × 79,670.86
  4. Step 4: Simplify right side
    124,012.28x = 14,826,837,803.88
  5. Step 5: Solve for x
    x = 14,826,837,803.88/124,012.28
  6. Step 6: Final answer
    x = 119,559.43

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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.