Home / 137,106.08-189,216.04-76,682.36

Finding the Fourth Proportional to 137,106.08, 189,216.04 and 76,682.36

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Solution

The fourth proportional to 137,106.08, 189,216.04 and 76,682.36 is: 105,827.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,106.08 : 189,216.04 = 76,682.36 : x
  2. Step 2: Convert to fraction form
    137,106.08/189,216.04 = 76,682.36/x
  3. Step 3: Cross multiply
    137,106.08x = 189,216.04 × 76,682.36
  4. Step 4: Simplify right side
    137,106.08x = 14,509,532,497.05
  5. Step 5: Solve for x
    x = 14,509,532,497.05/137,106.08
  6. Step 6: Final answer
    x = 105,827.05

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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.