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Finding the Fourth Proportional to 144,891.20, 217,444.80 and 74,734.40

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Solution

The fourth proportional to 144,891.20, 217,444.80 and 74,734.40 is: 112,157.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,891.20 : 217,444.80 = 74,734.40 : x
  2. Step 2: Convert to fraction form
    144,891.20/217,444.80 = 74,734.40/x
  3. Step 3: Cross multiply
    144,891.20x = 217,444.80 × 74,734.40
  4. Step 4: Simplify right side
    144,891.20x = 16,250,606,661.12
  5. Step 5: Solve for x
    x = 16,250,606,661.12/144,891.20
  6. Step 6: Final answer
    x = 112,157.31

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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.