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Finding the Fourth Proportional to 144,907.20, 217,101.60 and 89,438.40

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Solution

The fourth proportional to 144,907.20, 217,101.60 and 89,438.40 is: 133,997.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,907.20 : 217,101.60 = 89,438.40 : x
  2. Step 2: Convert to fraction form
    144,907.20/217,101.60 = 89,438.40/x
  3. Step 3: Cross multiply
    144,907.20x = 217,101.60 × 89,438.40
  4. Step 4: Simplify right side
    144,907.20x = 19,417,219,741.44
  5. Step 5: Solve for x
    x = 19,417,219,741.44/144,907.20
  6. Step 6: Final answer
    x = 133,997.62

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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.