Home / 145,899.54-201,391.62-85,489.74

Finding the Fourth Proportional to 145,899.54, 201,391.62 and 85,489.74

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Solution

The fourth proportional to 145,899.54, 201,391.62 and 85,489.74 is: 118,005.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,899.54 : 201,391.62 = 85,489.74 : x
  2. Step 2: Convert to fraction form
    145,899.54/201,391.62 = 85,489.74/x
  3. Step 3: Cross multiply
    145,899.54x = 201,391.62 × 85,489.74
  4. Step 4: Simplify right side
    145,899.54x = 17,216,917,231.98
  5. Step 5: Solve for x
    x = 17,216,917,231.98/145,899.54
  6. Step 6: Final answer
    x = 118,005.29

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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.