Home / 145,788.57-201,119.44-85,321.75

Finding the Fourth Proportional to 145,788.57, 201,119.44 and 85,321.75

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Solution

The fourth proportional to 145,788.57, 201,119.44 and 85,321.75 is: 117,703.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,788.57 : 201,119.44 = 85,321.75 : x
  2. Step 2: Convert to fraction form
    145,788.57/201,119.44 = 85,321.75/x
  3. Step 3: Cross multiply
    145,788.57x = 201,119.44 × 85,321.75
  4. Step 4: Simplify right side
    145,788.57x = 17,159,862,579.82
  5. Step 5: Solve for x
    x = 17,159,862,579.82/145,788.57
  6. Step 6: Final answer
    x = 117,703.76

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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.