Home / 156,986.70-235,480.05-51,780.30

Finding the Fourth Proportional to 156,986.70, 235,480.05 and 51,780.30

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Solution

The fourth proportional to 156,986.70, 235,480.05 and 51,780.30 is: 77,670.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,986.70 : 235,480.05 = 51,780.30 : x
  2. Step 2: Convert to fraction form
    156,986.70/235,480.05 = 51,780.30/x
  3. Step 3: Cross multiply
    156,986.70x = 235,480.05 × 51,780.30
  4. Step 4: Simplify right side
    156,986.70x = 12,193,227,633.02
  5. Step 5: Solve for x
    x = 12,193,227,633.02/156,986.70
  6. Step 6: Final answer
    x = 77,670.45

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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.