Home / 125,585.40-188,378.10-72,222.60

Finding the Fourth Proportional to 125,585.40, 188,378.10 and 72,222.60

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Solution

The fourth proportional to 125,585.40, 188,378.10 and 72,222.60 is: 108,333.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,585.40 : 188,378.10 = 72,222.60 : x
  2. Step 2: Convert to fraction form
    125,585.40/188,378.10 = 72,222.60/x
  3. Step 3: Cross multiply
    125,585.40x = 188,378.10 × 72,222.60
  4. Step 4: Simplify right side
    125,585.40x = 13,605,156,165.06
  5. Step 5: Solve for x
    x = 13,605,156,165.06/125,585.40
  6. Step 6: Final answer
    x = 108,333.90

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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.