Home / 112,477.20-168,780.60-42,406.80

Finding the Fourth Proportional to 112,477.20, 168,780.60 and 42,406.80

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Solution

The fourth proportional to 112,477.20, 168,780.60 and 42,406.80 is: 63,634.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,477.20 : 168,780.60 = 42,406.80 : x
  2. Step 2: Convert to fraction form
    112,477.20/168,780.60 = 42,406.80/x
  3. Step 3: Cross multiply
    112,477.20x = 168,780.60 × 42,406.80
  4. Step 4: Simplify right side
    112,477.20x = 7,157,445,148.08
  5. Step 5: Solve for x
    x = 7,157,445,148.08/112,477.20
  6. Step 6: Final answer
    x = 63,634.63

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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.