Home / 145,539.13-200,843.70-81,877

Finding the Fourth Proportional to 145,539.13, 200,843.70 and 81,877

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Solution

The fourth proportional to 145,539.13, 200,843.70 and 81,877 is: 112,990.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,539.13 : 200,843.70 = 81,877 : x
  2. Step 2: Convert to fraction form
    145,539.13/200,843.70 = 81,877/x
  3. Step 3: Cross multiply
    145,539.13x = 200,843.70 × 81,877
  4. Step 4: Simplify right side
    145,539.13x = 16,444,479,624.90
  5. Step 5: Solve for x
    x = 16,444,479,624.90/145,539.13
  6. Step 6: Final answer
    x = 112,990.09

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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.