Home / 137,570.64-189,857.26-76,336.90

Finding the Fourth Proportional to 137,570.64, 189,857.26 and 76,336.90

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Solution

The fourth proportional to 137,570.64, 189,857.26 and 76,336.90 is: 105,350.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,570.64 : 189,857.26 = 76,336.90 : x
  2. Step 2: Convert to fraction form
    137,570.64/189,857.26 = 76,336.90/x
  3. Step 3: Cross multiply
    137,570.64x = 189,857.26 × 76,336.90
  4. Step 4: Simplify right side
    137,570.64x = 14,493,114,670.89
  5. Step 5: Solve for x
    x = 14,493,114,670.89/137,570.64
  6. Step 6: Final answer
    x = 105,350.35

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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.