Home / 147,640.32-203,740.80-80,572.80

Finding the Fourth Proportional to 147,640.32, 203,740.80 and 80,572.80

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Solution

The fourth proportional to 147,640.32, 203,740.80 and 80,572.80 is: 111,188.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,640.32 : 203,740.80 = 80,572.80 : x
  2. Step 2: Convert to fraction form
    147,640.32/203,740.80 = 80,572.80/x
  3. Step 3: Cross multiply
    147,640.32x = 203,740.80 × 80,572.80
  4. Step 4: Simplify right side
    147,640.32x = 16,415,966,730.24
  5. Step 5: Solve for x
    x = 16,415,966,730.24/147,640.32
  6. Step 6: Final answer
    x = 111,188.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.