Home / 281,127.68-421,690.98-91,587.81

Finding the Fourth Proportional to 281,127.68, 421,690.98 and 91,587.81

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Solution

The fourth proportional to 281,127.68, 421,690.98 and 91,587.81 is: 137,381.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,127.68 : 421,690.98 = 91,587.81 : x
  2. Step 2: Convert to fraction form
    281,127.68/421,690.98 = 91,587.81/x
  3. Step 3: Cross multiply
    281,127.68x = 421,690.98 × 91,587.81
  4. Step 4: Simplify right side
    281,127.68x = 38,621,753,354.95
  5. Step 5: Solve for x
    x = 38,621,753,354.95/281,127.68
  6. Step 6: Final answer
    x = 137,381.54

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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.