Home / 156,779.60-234,996.60-86,709.20

Finding the Fourth Proportional to 156,779.60, 234,996.60 and 86,709.20

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Solution

The fourth proportional to 156,779.60, 234,996.60 and 86,709.20 is: 129,968.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,779.60 : 234,996.60 = 86,709.20 : x
  2. Step 2: Convert to fraction form
    156,779.60/234,996.60 = 86,709.20/x
  3. Step 3: Cross multiply
    156,779.60x = 234,996.60 × 86,709.20
  4. Step 4: Simplify right side
    156,779.60x = 20,376,367,188.72
  5. Step 5: Solve for x
    x = 20,376,367,188.72/156,779.60
  6. Step 6: Final answer
    x = 129,968.23

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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.