Home / 112,790.42-155,650.81-61,802.73

Finding the Fourth Proportional to 112,790.42, 155,650.81 and 61,802.73

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Solution

The fourth proportional to 112,790.42, 155,650.81 and 61,802.73 is: 85,287.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,790.42 : 155,650.81 = 61,802.73 : x
  2. Step 2: Convert to fraction form
    112,790.42/155,650.81 = 61,802.73/x
  3. Step 3: Cross multiply
    112,790.42x = 155,650.81 × 61,802.73
  4. Step 4: Simplify right side
    112,790.42x = 9,619,644,772.26
  5. Step 5: Solve for x
    x = 9,619,644,772.26/112,790.42
  6. Step 6: Final answer
    x = 85,287.79

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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.