Home / 123,070.34-184,990.86-81,219.36

Finding the Fourth Proportional to 123,070.34, 184,990.86 and 81,219.36

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Solution

The fourth proportional to 123,070.34, 184,990.86 and 81,219.36 is: 122,083.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,070.34 : 184,990.86 = 81,219.36 : x
  2. Step 2: Convert to fraction form
    123,070.34/184,990.86 = 81,219.36/x
  3. Step 3: Cross multiply
    123,070.34x = 184,990.86 × 81,219.36
  4. Step 4: Simplify right side
    123,070.34x = 15,024,839,717.53
  5. Step 5: Solve for x
    x = 15,024,839,717.53/123,070.34
  6. Step 6: Final answer
    x = 122,083.35

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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.