Home / 156,776.10-234,991.35-86,705.70

Finding the Fourth Proportional to 156,776.10, 234,991.35 and 86,705.70

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Solution

The fourth proportional to 156,776.10, 234,991.35 and 86,705.70 is: 129,962.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,776.10 : 234,991.35 = 86,705.70 : x
  2. Step 2: Convert to fraction form
    156,776.10/234,991.35 = 86,705.70/x
  3. Step 3: Cross multiply
    156,776.10x = 234,991.35 × 86,705.70
  4. Step 4: Simplify right side
    156,776.10x = 20,375,089,495.70
  5. Step 5: Solve for x
    x = 20,375,089,495.70/156,776.10
  6. Step 6: Final answer
    x = 129,962.98

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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.