Home / 125,513.20-188,269.80-72,369.10

Finding the Fourth Proportional to 125,513.20, 188,269.80 and 72,369.10

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Solution

The fourth proportional to 125,513.20, 188,269.80 and 72,369.10 is: 108,553.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,513.20 : 188,269.80 = 72,369.10 : x
  2. Step 2: Convert to fraction form
    125,513.20/188,269.80 = 72,369.10/x
  3. Step 3: Cross multiply
    125,513.20x = 188,269.80 × 72,369.10
  4. Step 4: Simplify right side
    125,513.20x = 13,624,915,983.18
  5. Step 5: Solve for x
    x = 13,624,915,983.18/125,513.20
  6. Step 6: Final answer
    x = 108,553.65

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1.5x scale

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.