Home / 112,631.21-155,363.52-74,390.83

Finding the Fourth Proportional to 112,631.21, 155,363.52 and 74,390.83

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Solution

The fourth proportional to 112,631.21, 155,363.52 and 74,390.83 is: 102,614.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,631.21 : 155,363.52 = 74,390.83 : x
  2. Step 2: Convert to fraction form
    112,631.21/155,363.52 = 74,390.83/x
  3. Step 3: Cross multiply
    112,631.21x = 155,363.52 × 74,390.83
  4. Step 4: Simplify right side
    112,631.21x = 11,557,621,113.59
  5. Step 5: Solve for x
    x = 11,557,621,113.59/112,631.21
  6. Step 6: Final answer
    x = 102,614.73

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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.