Home / 145,143.11-200,262.44-84,679.25

Finding the Fourth Proportional to 145,143.11, 200,262.44 and 84,679.25

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Solution

The fourth proportional to 145,143.11, 200,262.44 and 84,679.25 is: 116,836.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,143.11 : 200,262.44 = 84,679.25 : x
  2. Step 2: Convert to fraction form
    145,143.11/200,262.44 = 84,679.25/x
  3. Step 3: Cross multiply
    145,143.11x = 200,262.44 × 84,679.25
  4. Step 4: Simplify right side
    145,143.11x = 16,958,072,432.76
  5. Step 5: Solve for x
    x = 16,958,072,432.76/145,143.11
  6. Step 6: Final answer
    x = 116,836.91

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1.5x scale

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.