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Finding the Fourth Proportional to 160,003.39, 239,995.30 and 66,509.95

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Solution

The fourth proportional to 160,003.39, 239,995.30 and 66,509.95 is: 99,760.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,003.39 : 239,995.30 = 66,509.95 : x
  2. Step 2: Convert to fraction form
    160,003.39/239,995.30 = 66,509.95/x
  3. Step 3: Cross multiply
    160,003.39x = 239,995.30 × 66,509.95
  4. Step 4: Simplify right side
    160,003.39x = 15,962,075,403.24
  5. Step 5: Solve for x
    x = 15,962,075,403.24/160,003.39
  6. Step 6: Final answer
    x = 99,760.86

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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.