Home / 125,948.20-189,068.10-72,682.60

Finding the Fourth Proportional to 125,948.20, 189,068.10 and 72,682.60

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Solution

The fourth proportional to 125,948.20, 189,068.10 and 72,682.60 is: 109,108.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,948.20 : 189,068.10 = 72,682.60 : x
  2. Step 2: Convert to fraction form
    125,948.20/189,068.10 = 72,682.60/x
  3. Step 3: Cross multiply
    125,948.20x = 189,068.10 × 72,682.60
  4. Step 4: Simplify right side
    125,948.20x = 13,741,961,085.06
  5. Step 5: Solve for x
    x = 13,741,961,085.06/125,948.20
  6. Step 6: Final answer
    x = 109,108.04

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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.