Home / 156,986.55-235,479.83-78,254.55

Finding the Fourth Proportional to 156,986.55, 235,479.83 and 78,254.55

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Solution

The fourth proportional to 156,986.55, 235,479.83 and 78,254.55 is: 117,381.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,986.55 : 235,479.83 = 78,254.55 : x
  2. Step 2: Convert to fraction form
    156,986.55/235,479.83 = 78,254.55/x
  3. Step 3: Cross multiply
    156,986.55x = 235,479.83 × 78,254.55
  4. Step 4: Simplify right side
    156,986.55x = 18,427,368,130.73
  5. Step 5: Solve for x
    x = 18,427,368,130.73/156,986.55
  6. Step 6: Final answer
    x = 117,381.83

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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.