Home / 147,512.45-221,432.70-91,415.90

Finding the Fourth Proportional to 147,512.45, 221,432.70 and 91,415.90

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Solution

The fourth proportional to 147,512.45, 221,432.70 and 91,415.90 is: 137,225.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,512.45 : 221,432.70 = 91,415.90 : x
  2. Step 2: Convert to fraction form
    147,512.45/221,432.70 = 91,415.90/x
  3. Step 3: Cross multiply
    147,512.45x = 221,432.70 × 91,415.90
  4. Step 4: Simplify right side
    147,512.45x = 20,242,469,559.93
  5. Step 5: Solve for x
    x = 20,242,469,559.93/147,512.45
  6. Step 6: Final answer
    x = 137,225.50

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1.5x scale

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.