Home / 145,536.90-200,840.61-81,874.74

Finding the Fourth Proportional to 145,536.90, 200,840.61 and 81,874.74

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Solution

The fourth proportional to 145,536.90, 200,840.61 and 81,874.74 is: 112,986.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,536.90 : 200,840.61 = 81,874.74 : x
  2. Step 2: Convert to fraction form
    145,536.90/200,840.61 = 81,874.74/x
  3. Step 3: Cross multiply
    145,536.90x = 200,840.61 × 81,874.74
  4. Step 4: Simplify right side
    145,536.90x = 16,443,772,725.19
  5. Step 5: Solve for x
    x = 16,443,772,725.19/145,536.90
  6. Step 6: Final answer
    x = 112,986.97

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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.