Home / 112,688.13-155,504.79-61,699.92

Finding the Fourth Proportional to 112,688.13, 155,504.79 and 61,699.92

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Solution

The fourth proportional to 112,688.13, 155,504.79 and 61,699.92 is: 85,143.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,688.13 : 155,504.79 = 61,699.92 : x
  2. Step 2: Convert to fraction form
    112,688.13/155,504.79 = 61,699.92/x
  3. Step 3: Cross multiply
    112,688.13x = 155,504.79 × 61,699.92
  4. Step 4: Simplify right side
    112,688.13x = 9,594,633,102.62
  5. Step 5: Solve for x
    x = 9,594,633,102.62/112,688.13
  6. Step 6: Final answer
    x = 85,143.25

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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.