Home / 112,785.74-155,638.17-61,789.10

Finding the Fourth Proportional to 112,785.74, 155,638.17 and 61,789.10

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Solution

The fourth proportional to 112,785.74, 155,638.17 and 61,789.10 is: 85,265.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,785.74 : 155,638.17 = 61,789.10 : x
  2. Step 2: Convert to fraction form
    112,785.74/155,638.17 = 61,789.10/x
  3. Step 3: Cross multiply
    112,785.74x = 155,638.17 × 61,789.10
  4. Step 4: Simplify right side
    112,785.74x = 9,616,742,449.95
  5. Step 5: Solve for x
    x = 9,616,742,449.95/112,785.74
  6. Step 6: Final answer
    x = 85,265.59

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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.