Home / 102,099.64-140,900.75-56,779.54

Finding the Fourth Proportional to 102,099.64, 140,900.75 and 56,779.54

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Solution

The fourth proportional to 102,099.64, 140,900.75 and 56,779.54 is: 78,357.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,099.64 : 140,900.75 = 56,779.54 : x
  2. Step 2: Convert to fraction form
    102,099.64/140,900.75 = 56,779.54/x
  3. Step 3: Cross multiply
    102,099.64x = 140,900.75 × 56,779.54
  4. Step 4: Simplify right side
    102,099.64x = 8,000,279,770.66
  5. Step 5: Solve for x
    x = 8,000,279,770.66/102,099.64
  6. Step 6: Final answer
    x = 78,357.57

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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.