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Finding the Fourth Proportional to 145,608.74, 200,900.79 and 85,194.21

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Solution

The fourth proportional to 145,608.74, 200,900.79 and 85,194.21 is: 117,545.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,608.74 : 200,900.79 = 85,194.21 : x
  2. Step 2: Convert to fraction form
    145,608.74/200,900.79 = 85,194.21/x
  3. Step 3: Cross multiply
    145,608.74x = 200,900.79 × 85,194.21
  4. Step 4: Simplify right side
    145,608.74x = 17,115,584,845.80
  5. Step 5: Solve for x
    x = 17,115,584,845.80/145,608.74
  6. Step 6: Final answer
    x = 117,545.04

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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.