Home / 129,208.64-194,104.56-76,652.72

Finding the Fourth Proportional to 129,208.64, 194,104.56 and 76,652.72

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Solution

The fourth proportional to 129,208.64, 194,104.56 and 76,652.72 is: 115,152.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,208.64 : 194,104.56 = 76,652.72 : x
  2. Step 2: Convert to fraction form
    129,208.64/194,104.56 = 76,652.72/x
  3. Step 3: Cross multiply
    129,208.64x = 194,104.56 × 76,652.72
  4. Step 4: Simplify right side
    129,208.64x = 14,878,642,488.40
  5. Step 5: Solve for x
    x = 14,878,642,488.40/129,208.64
  6. Step 6: Final answer
    x = 115,152.07

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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.