Home / 145,551.36-200,862.72-81,889.28

Finding the Fourth Proportional to 145,551.36, 200,862.72 and 81,889.28

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Solution

The fourth proportional to 145,551.36, 200,862.72 and 81,889.28 is: 113,008.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,551.36 : 200,862.72 = 81,889.28 : x
  2. Step 2: Convert to fraction form
    145,551.36/200,862.72 = 81,889.28/x
  3. Step 3: Cross multiply
    145,551.36x = 200,862.72 × 81,889.28
  4. Step 4: Simplify right side
    145,551.36x = 16,448,503,519.64
  5. Step 5: Solve for x
    x = 16,448,503,519.64/145,551.36
  6. Step 6: Final answer
    x = 113,008.24

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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.