Home / 112,476.40-155,237.52-85,577.92

Finding the Fourth Proportional to 112,476.40, 155,237.52 and 85,577.92

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Solution

The fourth proportional to 112,476.40, 155,237.52 and 85,577.92 is: 118,112.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,476.40 : 155,237.52 = 85,577.92 : x
  2. Step 2: Convert to fraction form
    112,476.40/155,237.52 = 85,577.92/x
  3. Step 3: Cross multiply
    112,476.40x = 155,237.52 × 85,577.92
  4. Step 4: Simplify right side
    112,476.40x = 13,284,904,067.56
  5. Step 5: Solve for x
    x = 13,284,904,067.56/112,476.40
  6. Step 6: Final answer
    x = 118,112.81

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1.5x scale

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.