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Finding the Fourth Proportional to 144,941.60, 217,412.40 and 66,209.60

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Solution

The fourth proportional to 144,941.60, 217,412.40 and 66,209.60 is: 99,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,941.60 : 217,412.40 = 66,209.60 : x
  2. Step 2: Convert to fraction form
    144,941.60/217,412.40 = 66,209.60/x
  3. Step 3: Cross multiply
    144,941.60x = 217,412.40 × 66,209.60
  4. Step 4: Simplify right side
    144,941.60x = 14,394,788,039.04
  5. Step 5: Solve for x
    x = 14,394,788,039.04/144,941.60
  6. Step 6: Final answer
    x = 99,314.40

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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.