Home / 112,815.10-155,643.60-67,494.36

Finding the Fourth Proportional to 112,815.10, 155,643.60 and 67,494.36

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Solution

The fourth proportional to 112,815.10, 155,643.60 and 67,494.36 is: 93,117.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,815.10 : 155,643.60 = 67,494.36 : x
  2. Step 2: Convert to fraction form
    112,815.10/155,643.60 = 67,494.36/x
  3. Step 3: Cross multiply
    112,815.10x = 155,643.60 × 67,494.36
  4. Step 4: Simplify right side
    112,815.10x = 10,505,065,170.10
  5. Step 5: Solve for x
    x = 10,505,065,170.10/112,815.10
  6. Step 6: Final answer
    x = 93,117.55

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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.