Home / 208,595.02-312,904.64-80,512.02

Finding the Fourth Proportional to 208,595.02, 312,904.64 and 80,512.02

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Solution

The fourth proportional to 208,595.02, 312,904.64 and 80,512.02 is: 120,772.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,595.02 : 312,904.64 = 80,512.02 : x
  2. Step 2: Convert to fraction form
    208,595.02/312,904.64 = 80,512.02/x
  3. Step 3: Cross multiply
    208,595.02x = 312,904.64 × 80,512.02
  4. Step 4: Simplify right side
    208,595.02x = 25,192,584,633.77
  5. Step 5: Solve for x
    x = 25,192,584,633.77/208,595.02
  6. Step 6: Final answer
    x = 120,772.70

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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.