Home / 125,394.30-188,258.40-72,841.50

Finding the Fourth Proportional to 125,394.30, 188,258.40 and 72,841.50

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Solution

The fourth proportional to 125,394.30, 188,258.40 and 72,841.50 is: 109,359.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,394.30 : 188,258.40 = 72,841.50 : x
  2. Step 2: Convert to fraction form
    125,394.30/188,258.40 = 72,841.50/x
  3. Step 3: Cross multiply
    125,394.30x = 188,258.40 × 72,841.50
  4. Step 4: Simplify right side
    125,394.30x = 13,713,024,243.60
  5. Step 5: Solve for x
    x = 13,713,024,243.60/125,394.30
  6. Step 6: Final answer
    x = 109,359.23

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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.