Home / 145,334.70-200,560.08-81,683.28

Finding the Fourth Proportional to 145,334.70, 200,560.08 and 81,683.28

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Solution

The fourth proportional to 145,334.70, 200,560.08 and 81,683.28 is: 112,721.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,334.70 : 200,560.08 = 81,683.28 : x
  2. Step 2: Convert to fraction form
    145,334.70/200,560.08 = 81,683.28/x
  3. Step 3: Cross multiply
    145,334.70x = 200,560.08 × 81,683.28
  4. Step 4: Simplify right side
    145,334.70x = 16,382,405,171.46
  5. Step 5: Solve for x
    x = 16,382,405,171.46/145,334.70
  6. Step 6: Final answer
    x = 112,721.91

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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.