Home / 144,862.20-217,340.64-69,990.96

Finding the Fourth Proportional to 144,862.20, 217,340.64 and 69,990.96

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Solution

The fourth proportional to 144,862.20, 217,340.64 and 69,990.96 is: 105,009.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,862.20 : 217,340.64 = 69,990.96 : x
  2. Step 2: Convert to fraction form
    144,862.20/217,340.64 = 69,990.96/x
  3. Step 3: Cross multiply
    144,862.20x = 217,340.64 × 69,990.96
  4. Step 4: Simplify right side
    144,862.20x = 15,211,880,040.61
  5. Step 5: Solve for x
    x = 15,211,880,040.61/144,862.20
  6. Step 6: Final answer
    x = 105,009.31

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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.