Home / 112,133.12-154,735.80-61,831.04

Finding the Fourth Proportional to 112,133.12, 154,735.80 and 61,831.04

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Solution

The fourth proportional to 112,133.12, 154,735.80 and 61,831.04 is: 85,322.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,133.12 : 154,735.80 = 61,831.04 : x
  2. Step 2: Convert to fraction form
    112,133.12/154,735.80 = 61,831.04/x
  3. Step 3: Cross multiply
    112,133.12x = 154,735.80 × 61,831.04
  4. Step 4: Simplify right side
    112,133.12x = 9,567,475,439.23
  5. Step 5: Solve for x
    x = 9,567,475,439.23/112,133.12
  6. Step 6: Final answer
    x = 85,322.48

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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.