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Finding the Fourth Proportional to 145,754.72, 201,191.85 and 85,344.79

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Solution

The fourth proportional to 145,754.72, 201,191.85 and 85,344.79 is: 117,805.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,754.72 : 201,191.85 = 85,344.79 : x
  2. Step 2: Convert to fraction form
    145,754.72/201,191.85 = 85,344.79/x
  3. Step 3: Cross multiply
    145,754.72x = 201,191.85 × 85,344.79
  4. Step 4: Simplify right side
    145,754.72x = 17,170,675,684.98
  5. Step 5: Solve for x
    x = 17,170,675,684.98/145,754.72
  6. Step 6: Final answer
    x = 117,805.28

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1.5x scale

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.