Home / 281,156.24-421,712.76-103,630.16

Finding the Fourth Proportional to 281,156.24, 421,712.76 and 103,630.16

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Solution

The fourth proportional to 281,156.24, 421,712.76 and 103,630.16 is: 155,437.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,156.24 : 421,712.76 = 103,630.16 : x
  2. Step 2: Convert to fraction form
    281,156.24/421,712.76 = 103,630.16/x
  3. Step 3: Cross multiply
    281,156.24x = 421,712.76 × 103,630.16
  4. Step 4: Simplify right side
    281,156.24x = 43,702,160,792.84
  5. Step 5: Solve for x
    x = 43,702,160,792.84/281,156.24
  6. Step 6: Final answer
    x = 155,437.28

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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.