Home / 145,538.10-200,828.30-81,874.53

Finding the Fourth Proportional to 145,538.10, 200,828.30 and 81,874.53

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Solution

The fourth proportional to 145,538.10, 200,828.30 and 81,874.53 is: 112,978.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,538.10 : 200,828.30 = 81,874.53 : x
  2. Step 2: Convert to fraction form
    145,538.10/200,828.30 = 81,874.53/x
  3. Step 3: Cross multiply
    145,538.10x = 200,828.30 × 81,874.53
  4. Step 4: Simplify right side
    145,538.10x = 16,442,722,263.83
  5. Step 5: Solve for x
    x = 16,442,722,263.83/145,538.10
  6. Step 6: Final answer
    x = 112,978.82

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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.