Home / 137,141.64-189,272.97-76,715.64

Finding the Fourth Proportional to 137,141.64, 189,272.97 and 76,715.64

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Solution

The fourth proportional to 137,141.64, 189,272.97 and 76,715.64 is: 105,877.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,141.64 : 189,272.97 = 76,715.64 : x
  2. Step 2: Convert to fraction form
    137,141.64/189,272.97 = 76,715.64/x
  3. Step 3: Cross multiply
    137,141.64x = 189,272.97 × 76,715.64
  4. Step 4: Simplify right side
    137,141.64x = 14,520,197,028.25
  5. Step 5: Solve for x
    x = 14,520,197,028.25/137,141.64
  6. Step 6: Final answer
    x = 105,877.38

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1.5x scale

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.