Home / 156,965.30-235,447.95-78,233.30

Finding the Fourth Proportional to 156,965.30, 235,447.95 and 78,233.30

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Solution

The fourth proportional to 156,965.30, 235,447.95 and 78,233.30 is: 117,349.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,965.30 : 235,447.95 = 78,233.30 : x
  2. Step 2: Convert to fraction form
    156,965.30/235,447.95 = 78,233.30/x
  3. Step 3: Cross multiply
    156,965.30x = 235,447.95 × 78,233.30
  4. Step 4: Simplify right side
    156,965.30x = 18,419,870,106.74
  5. Step 5: Solve for x
    x = 18,419,870,106.74/156,965.30
  6. Step 6: Final answer
    x = 117,349.95

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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.