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Finding the Fourth Proportional to 193,585.60, 290,415.12 and 67,220.92

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Solution

The fourth proportional to 193,585.60, 290,415.12 and 67,220.92 is: 100,844.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,585.60 : 290,415.12 = 67,220.92 : x
  2. Step 2: Convert to fraction form
    193,585.60/290,415.12 = 67,220.92/x
  3. Step 3: Cross multiply
    193,585.60x = 290,415.12 × 67,220.92
  4. Step 4: Simplify right side
    193,585.60x = 19,521,971,548.31
  5. Step 5: Solve for x
    x = 19,521,971,548.31/193,585.60
  6. Step 6: Final answer
    x = 100,844.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.