Home / 186,423.10-279,782.27-81,315.88

Finding the Fourth Proportional to 186,423.10, 279,782.27 and 81,315.88

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Solution

The fourth proportional to 186,423.10, 279,782.27 and 81,315.88 is: 122,038.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,423.10 : 279,782.27 = 81,315.88 : x
  2. Step 2: Convert to fraction form
    186,423.10/279,782.27 = 81,315.88/x
  3. Step 3: Cross multiply
    186,423.10x = 279,782.27 × 81,315.88
  4. Step 4: Simplify right side
    186,423.10x = 22,750,741,493.45
  5. Step 5: Solve for x
    x = 22,750,741,493.45/186,423.10
  6. Step 6: Final answer
    x = 122,038.21

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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.