Home / 145,298.30-200,511.83-81,636.06

Finding the Fourth Proportional to 145,298.30, 200,511.83 and 81,636.06

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Solution

The fourth proportional to 145,298.30, 200,511.83 and 81,636.06 is: 112,657.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,298.30 : 200,511.83 = 81,636.06 : x
  2. Step 2: Convert to fraction form
    145,298.30/200,511.83 = 81,636.06/x
  3. Step 3: Cross multiply
    145,298.30x = 200,511.83 × 81,636.06
  4. Step 4: Simplify right side
    145,298.30x = 16,368,995,784.59
  5. Step 5: Solve for x
    x = 16,368,995,784.59/145,298.30
  6. Step 6: Final answer
    x = 112,657.86

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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.