Home / 112,728.92-155,567.64-61,740.68

Finding the Fourth Proportional to 112,728.92, 155,567.64 and 61,740.68

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Solution

The fourth proportional to 112,728.92, 155,567.64 and 61,740.68 is: 85,203.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,728.92 : 155,567.64 = 61,740.68 : x
  2. Step 2: Convert to fraction form
    112,728.92/155,567.64 = 61,740.68/x
  3. Step 3: Cross multiply
    112,728.92x = 155,567.64 × 61,740.68
  4. Step 4: Simplify right side
    112,728.92x = 9,604,851,879.60
  5. Step 5: Solve for x
    x = 9,604,851,879.60/112,728.92
  6. Step 6: Final answer
    x = 85,203.09

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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.