Home / 156,769.60-234,981.60-86,699.20

Finding the Fourth Proportional to 156,769.60, 234,981.60 and 86,699.20

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Solution

The fourth proportional to 156,769.60, 234,981.60 and 86,699.20 is: 129,953.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,769.60 : 234,981.60 = 86,699.20 : x
  2. Step 2: Convert to fraction form
    156,769.60/234,981.60 = 86,699.20/x
  3. Step 3: Cross multiply
    156,769.60x = 234,981.60 × 86,699.20
  4. Step 4: Simplify right side
    156,769.60x = 20,372,716,734.72
  5. Step 5: Solve for x
    x = 20,372,716,734.72/156,769.60
  6. Step 6: Final answer
    x = 129,953.24

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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.