Home / 281,342.17-421,925.10-81,676.36

Finding the Fourth Proportional to 281,342.17, 421,925.10 and 81,676.36

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Solution

The fourth proportional to 281,342.17, 421,925.10 and 81,676.36 is: 122,488.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,342.17 : 421,925.10 = 81,676.36 : x
  2. Step 2: Convert to fraction form
    281,342.17/421,925.10 = 81,676.36/x
  3. Step 3: Cross multiply
    281,342.17x = 421,925.10 × 81,676.36
  4. Step 4: Simplify right side
    281,342.17x = 34,461,306,360.64
  5. Step 5: Solve for x
    x = 34,461,306,360.64/281,342.17
  6. Step 6: Final answer
    x = 122,488.95

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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.