Home / 137,264.24-189,418.20-77,636.72

Finding the Fourth Proportional to 137,264.24, 189,418.20 and 77,636.72

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Solution

The fourth proportional to 137,264.24, 189,418.20 and 77,636.72 is: 107,135.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,264.24 : 189,418.20 = 77,636.72 : x
  2. Step 2: Convert to fraction form
    137,264.24/189,418.20 = 77,636.72/x
  3. Step 3: Cross multiply
    137,264.24x = 189,418.20 × 77,636.72
  4. Step 4: Simplify right side
    137,264.24x = 14,705,807,756.30
  5. Step 5: Solve for x
    x = 14,705,807,756.30/137,264.24
  6. Step 6: Final answer
    x = 107,135.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.