Home / 145,351.48-200,577.36-81,685.12

Finding the Fourth Proportional to 145,351.48, 200,577.36 and 81,685.12

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Solution

The fourth proportional to 145,351.48, 200,577.36 and 81,685.12 is: 112,721.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,351.48 : 200,577.36 = 81,685.12 : x
  2. Step 2: Convert to fraction form
    145,351.48/200,577.36 = 81,685.12/x
  3. Step 3: Cross multiply
    145,351.48x = 200,577.36 × 81,685.12
  4. Step 4: Simplify right side
    145,351.48x = 16,384,185,720.88
  5. Step 5: Solve for x
    x = 16,384,185,720.88/145,351.48
  6. Step 6: Final answer
    x = 112,721.15

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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.