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Finding the Fourth Proportional to 145,965.20, 218,602.20 and 98,963.60

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Solution

The fourth proportional to 145,965.20, 218,602.20 and 98,963.60 is: 148,211.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,965.20 : 218,602.20 = 98,963.60 : x
  2. Step 2: Convert to fraction form
    145,965.20/218,602.20 = 98,963.60/x
  3. Step 3: Cross multiply
    145,965.20x = 218,602.20 × 98,963.60
  4. Step 4: Simplify right side
    145,965.20x = 21,633,660,679.92
  5. Step 5: Solve for x
    x = 21,633,660,679.92/145,965.20
  6. Step 6: Final answer
    x = 148,211.09

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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.