Home / 145,238.94-200,429.24-80,707.91

Finding the Fourth Proportional to 145,238.94, 200,429.24 and 80,707.91

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Solution

The fourth proportional to 145,238.94, 200,429.24 and 80,707.91 is: 111,376.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,238.94 : 200,429.24 = 80,707.91 : x
  2. Step 2: Convert to fraction form
    145,238.94/200,429.24 = 80,707.91/x
  3. Step 3: Cross multiply
    145,238.94x = 200,429.24 × 80,707.91
  4. Step 4: Simplify right side
    145,238.94x = 16,176,223,657.60
  5. Step 5: Solve for x
    x = 16,176,223,657.60/145,238.94
  6. Step 6: Final answer
    x = 111,376.63

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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.