Home / 221,148.06-305,172.81-125,641.50

Finding the Fourth Proportional to 221,148.06, 305,172.81 and 125,641.50

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Solution

The fourth proportional to 221,148.06, 305,172.81 and 125,641.50 is: 173,378.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,148.06 : 305,172.81 = 125,641.50 : x
  2. Step 2: Convert to fraction form
    221,148.06/305,172.81 = 125,641.50/x
  3. Step 3: Cross multiply
    221,148.06x = 305,172.81 × 125,641.50
  4. Step 4: Simplify right side
    221,148.06x = 38,342,369,607.62
  5. Step 5: Solve for x
    x = 38,342,369,607.62/221,148.06
  6. Step 6: Final answer
    x = 173,378.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.