Home / 145,486.35-200,756.97-81,822.78

Finding the Fourth Proportional to 145,486.35, 200,756.97 and 81,822.78

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Solution

The fourth proportional to 145,486.35, 200,756.97 and 81,822.78 is: 112,907.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,486.35 : 200,756.97 = 81,822.78 : x
  2. Step 2: Convert to fraction form
    145,486.35/200,756.97 = 81,822.78/x
  3. Step 3: Cross multiply
    145,486.35x = 200,756.97 × 81,822.78
  4. Step 4: Simplify right side
    145,486.35x = 16,426,493,389.78
  5. Step 5: Solve for x
    x = 16,426,493,389.78/145,486.35
  6. Step 6: Final answer
    x = 112,907.45

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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.