Home / 145,755.72-201,193.23-85,345.78

Finding the Fourth Proportional to 145,755.72, 201,193.23 and 85,345.78

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Solution

The fourth proportional to 145,755.72, 201,193.23 and 85,345.78 is: 117,806.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,755.72 : 201,193.23 = 85,345.78 : x
  2. Step 2: Convert to fraction form
    145,755.72/201,193.23 = 85,345.78/x
  3. Step 3: Cross multiply
    145,755.72x = 201,193.23 × 85,345.78
  4. Step 4: Simplify right side
    145,755.72x = 17,170,993,145.07
  5. Step 5: Solve for x
    x = 17,170,993,145.07/145,755.72
  6. Step 6: Final answer
    x = 117,806.65

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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.