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Finding the Fourth Proportional to 144,989.60, 217,138.80 and 89,002.40

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Solution

The fourth proportional to 144,989.60, 217,138.80 and 89,002.40 is: 133,291.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,989.60 : 217,138.80 = 89,002.40 : x
  2. Step 2: Convert to fraction form
    144,989.60/217,138.80 = 89,002.40/x
  3. Step 3: Cross multiply
    144,989.60x = 217,138.80 × 89,002.40
  4. Step 4: Simplify right side
    144,989.60x = 19,325,874,333.12
  5. Step 5: Solve for x
    x = 19,325,874,333.12/144,989.60
  6. Step 6: Final answer
    x = 133,291.45

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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.