Home / 112,557.60-168,739.20-100,747.80

Finding the Fourth Proportional to 112,557.60, 168,739.20 and 100,747.80

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Solution

The fourth proportional to 112,557.60, 168,739.20 and 100,747.80 is: 151,034.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,557.60 : 168,739.20 = 100,747.80 : x
  2. Step 2: Convert to fraction form
    112,557.60/168,739.20 = 100,747.80/x
  3. Step 3: Cross multiply
    112,557.60x = 168,739.20 × 100,747.80
  4. Step 4: Simplify right side
    112,557.60x = 17,000,103,173.76
  5. Step 5: Solve for x
    x = 17,000,103,173.76/112,557.60
  6. Step 6: Final answer
    x = 151,034.70

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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.