Home / 281,121.52-421,681.95-91,581.59

Finding the Fourth Proportional to 281,121.52, 421,681.95 and 91,581.59

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Solution

The fourth proportional to 281,121.52, 421,681.95 and 91,581.59 is: 137,372.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,121.52 : 421,681.95 = 91,581.59 : x
  2. Step 2: Convert to fraction form
    281,121.52/421,681.95 = 91,581.59/x
  3. Step 3: Cross multiply
    281,121.52x = 421,681.95 × 91,581.59
  4. Step 4: Simplify right side
    281,121.52x = 38,618,303,455.30
  5. Step 5: Solve for x
    x = 38,618,303,455.30/281,121.52
  6. Step 6: Final answer
    x = 137,372.28

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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.