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Finding the Fourth Proportional to 180,376.80, 248,898.20 and 103,920.90

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Solution

The fourth proportional to 180,376.80, 248,898.20 and 103,920.90 is: 143,398.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,376.80 : 248,898.20 = 103,920.90 : x
  2. Step 2: Convert to fraction form
    180,376.80/248,898.20 = 103,920.90/x
  3. Step 3: Cross multiply
    180,376.80x = 248,898.20 × 103,920.90
  4. Step 4: Simplify right side
    180,376.80x = 25,865,724,952.38
  5. Step 5: Solve for x
    x = 25,865,724,952.38/180,376.80
  6. Step 6: Final answer
    x = 143,398.29

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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.