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Finding the Fourth Proportional to 144,911.60, 217,367.40 and 89,538.80

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Solution

The fourth proportional to 144,911.60, 217,367.40 and 89,538.80 is: 134,308.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,911.60 : 217,367.40 = 89,538.80 : x
  2. Step 2: Convert to fraction form
    144,911.60/217,367.40 = 89,538.80/x
  3. Step 3: Cross multiply
    144,911.60x = 217,367.40 × 89,538.80
  4. Step 4: Simplify right side
    144,911.60x = 19,462,816,155.12
  5. Step 5: Solve for x
    x = 19,462,816,155.12/144,911.60
  6. Step 6: Final answer
    x = 134,308.20

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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.