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Finding the Fourth Proportional to 144,600.30, 216,900.45 and 91,456.20

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Solution

The fourth proportional to 144,600.30, 216,900.45 and 91,456.20 is: 137,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,600.30 : 216,900.45 = 91,456.20 : x
  2. Step 2: Convert to fraction form
    144,600.30/216,900.45 = 91,456.20/x
  3. Step 3: Cross multiply
    144,600.30x = 216,900.45 × 91,456.20
  4. Step 4: Simplify right side
    144,600.30x = 19,836,890,935.29
  5. Step 5: Solve for x
    x = 19,836,890,935.29/144,600.30
  6. Step 6: Final answer
    x = 137,184.30

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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.