Home / 147,835.80-221,753.70-139,087.80

Finding the Fourth Proportional to 147,835.80, 221,753.70 and 139,087.80

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Solution

The fourth proportional to 147,835.80, 221,753.70 and 139,087.80 is: 208,631.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,835.80 : 221,753.70 = 139,087.80 : x
  2. Step 2: Convert to fraction form
    147,835.80/221,753.70 = 139,087.80/x
  3. Step 3: Cross multiply
    147,835.80x = 221,753.70 × 139,087.80
  4. Step 4: Simplify right side
    147,835.80x = 30,843,234,274.86
  5. Step 5: Solve for x
    x = 30,843,234,274.86/147,835.80
  6. Step 6: Final answer
    x = 208,631.70

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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.