Home / 160,405.11-221,359.25-99,975.70

Finding the Fourth Proportional to 160,405.11, 221,359.25 and 99,975.70

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Solution

The fourth proportional to 160,405.11, 221,359.25 and 99,975.70 is: 137,966.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,405.11 : 221,359.25 = 99,975.70 : x
  2. Step 2: Convert to fraction form
    160,405.11/221,359.25 = 99,975.70/x
  3. Step 3: Cross multiply
    160,405.11x = 221,359.25 × 99,975.70
  4. Step 4: Simplify right side
    160,405.11x = 22,130,545,934.50
  5. Step 5: Solve for x
    x = 22,130,545,934.50/160,405.11
  6. Step 6: Final answer
    x = 137,966.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.