Home / 281,000.17-421,721.67-103,631.72

Finding the Fourth Proportional to 281,000.17, 421,721.67 and 103,631.72

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Solution

The fourth proportional to 281,000.17, 421,721.67 and 103,631.72 is: 155,529.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,000.17 : 421,721.67 = 103,631.72 : x
  2. Step 2: Convert to fraction form
    281,000.17/421,721.67 = 103,631.72/x
  3. Step 3: Cross multiply
    281,000.17x = 421,721.67 × 103,631.72
  4. Step 4: Simplify right side
    281,000.17x = 43,703,742,023.37
  5. Step 5: Solve for x
    x = 43,703,742,023.37/281,000.17
  6. Step 6: Final answer
    x = 155,529.24

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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.