Home / 281,070.52-421,667.34-81,399.04

Finding the Fourth Proportional to 281,070.52, 421,667.34 and 81,399.04

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Solution

The fourth proportional to 281,070.52, 421,667.34 and 81,399.04 is: 122,116.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,070.52 : 421,667.34 = 81,399.04 : x
  2. Step 2: Convert to fraction form
    281,070.52/421,667.34 = 81,399.04/x
  3. Step 3: Cross multiply
    281,070.52x = 421,667.34 × 81,399.04
  4. Step 4: Simplify right side
    281,070.52x = 34,323,316,675.35
  5. Step 5: Solve for x
    x = 34,323,316,675.35/281,070.52
  6. Step 6: Final answer
    x = 122,116.39

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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.