Home / 160,428.10-221,396-92,439.80

Finding the Fourth Proportional to 160,428.10, 221,396 and 92,439.80

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Solution

The fourth proportional to 160,428.10, 221,396 and 92,439.80 is: 127,569.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,428.10 : 221,396 = 92,439.80 : x
  2. Step 2: Convert to fraction form
    160,428.10/221,396 = 92,439.80/x
  3. Step 3: Cross multiply
    160,428.10x = 221,396 × 92,439.80
  4. Step 4: Simplify right side
    160,428.10x = 20,465,801,960.80
  5. Step 5: Solve for x
    x = 20,465,801,960.80/160,428.10
  6. Step 6: Final answer
    x = 127,569.93

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1.5x scale

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.