Home / 112,519.92-168,780.15-28,280.28

Finding the Fourth Proportional to 112,519.92, 168,780.15 and 28,280.28

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Solution

The fourth proportional to 112,519.92, 168,780.15 and 28,280.28 is: 42,420.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,519.92 : 168,780.15 = 28,280.28 : x
  2. Step 2: Convert to fraction form
    112,519.92/168,780.15 = 28,280.28/x
  3. Step 3: Cross multiply
    112,519.92x = 168,780.15 × 28,280.28
  4. Step 4: Simplify right side
    112,519.92x = 4,773,149,900.44
  5. Step 5: Solve for x
    x = 4,773,149,900.44/112,519.92
  6. Step 6: Final answer
    x = 42,420.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.