Home / 154,162.17-212,778.09-93,720

Finding the Fourth Proportional to 154,162.17, 212,778.09 and 93,720

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Solution

The fourth proportional to 154,162.17, 212,778.09 and 93,720 is: 129,354.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,162.17 : 212,778.09 = 93,720 : x
  2. Step 2: Convert to fraction form
    154,162.17/212,778.09 = 93,720/x
  3. Step 3: Cross multiply
    154,162.17x = 212,778.09 × 93,720
  4. Step 4: Simplify right side
    154,162.17x = 19,941,562,594.80
  5. Step 5: Solve for x
    x = 19,941,562,594.80/154,162.17
  6. Step 6: Final answer
    x = 129,354.45

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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.