Home / 125,428.20-188,142.30-83,364.90

Finding the Fourth Proportional to 125,428.20, 188,142.30 and 83,364.90

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Solution

The fourth proportional to 125,428.20, 188,142.30 and 83,364.90 is: 125,047.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,428.20 : 188,142.30 = 83,364.90 : x
  2. Step 2: Convert to fraction form
    125,428.20/188,142.30 = 83,364.90/x
  3. Step 3: Cross multiply
    125,428.20x = 188,142.30 × 83,364.90
  4. Step 4: Simplify right side
    125,428.20x = 15,684,464,025.27
  5. Step 5: Solve for x
    x = 15,684,464,025.27/125,428.20
  6. Step 6: Final answer
    x = 125,047.35

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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.