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Finding the Fourth Proportional to 145,604.32, 200,915.52 and 85,163.08

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Solution

The fourth proportional to 145,604.32, 200,915.52 and 85,163.08 is: 117,514.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,604.32 : 200,915.52 = 85,163.08 : x
  2. Step 2: Convert to fraction form
    145,604.32/200,915.52 = 85,163.08/x
  3. Step 3: Cross multiply
    145,604.32x = 200,915.52 × 85,163.08
  4. Step 4: Simplify right side
    145,604.32x = 17,110,584,503.00
  5. Step 5: Solve for x
    x = 17,110,584,503.00/145,604.32
  6. Step 6: Final answer
    x = 117,514.26

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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.