Home / 156,857.20-235,285.80-83,129.20

Finding the Fourth Proportional to 156,857.20, 235,285.80 and 83,129.20

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Solution

The fourth proportional to 156,857.20, 235,285.80 and 83,129.20 is: 124,693.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,857.20 : 235,285.80 = 83,129.20 : x
  2. Step 2: Convert to fraction form
    156,857.20/235,285.80 = 83,129.20/x
  3. Step 3: Cross multiply
    156,857.20x = 235,285.80 × 83,129.20
  4. Step 4: Simplify right side
    156,857.20x = 19,559,120,325.36
  5. Step 5: Solve for x
    x = 19,559,120,325.36/156,857.20
  6. Step 6: Final answer
    x = 124,693.80

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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.