Home / 112,116.44-154,721.89-61,128.75

Finding the Fourth Proportional to 112,116.44, 154,721.89 and 61,128.75

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Solution

The fourth proportional to 112,116.44, 154,721.89 and 61,128.75 is: 84,358.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,116.44 : 154,721.89 = 61,128.75 : x
  2. Step 2: Convert to fraction form
    112,116.44/154,721.89 = 61,128.75/x
  3. Step 3: Cross multiply
    112,116.44x = 154,721.89 × 61,128.75
  4. Step 4: Simplify right side
    112,116.44x = 9,457,956,272.96
  5. Step 5: Solve for x
    x = 9,457,956,272.96/112,116.44
  6. Step 6: Final answer
    x = 84,358.34

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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.