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Finding the Fourth Proportional to 110,543.20, 165,814.80 and 100,866.40

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Solution

The fourth proportional to 110,543.20, 165,814.80 and 100,866.40 is: 151,299.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,543.20 : 165,814.80 = 100,866.40 : x
  2. Step 2: Convert to fraction form
    110,543.20/165,814.80 = 100,866.40/x
  3. Step 3: Cross multiply
    110,543.20x = 165,814.80 × 100,866.40
  4. Step 4: Simplify right side
    110,543.20x = 16,725,141,942.72
  5. Step 5: Solve for x
    x = 16,725,141,942.72/110,543.20
  6. Step 6: Final answer
    x = 151,299.60

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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.