Home / 112,669.88-155,484.43-61,682.45

Finding the Fourth Proportional to 112,669.88, 155,484.43 and 61,682.45

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Solution

The fourth proportional to 112,669.88, 155,484.43 and 61,682.45 is: 85,121.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,669.88 : 155,484.43 = 61,682.45 : x
  2. Step 2: Convert to fraction form
    112,669.88/155,484.43 = 61,682.45/x
  3. Step 3: Cross multiply
    112,669.88x = 155,484.43 × 61,682.45
  4. Step 4: Simplify right side
    112,669.88x = 9,590,659,647.63
  5. Step 5: Solve for x
    x = 9,590,659,647.63/112,669.88
  6. Step 6: Final answer
    x = 85,121.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.