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Finding the Fourth Proportional to 147,555.20, 221,332.80 and 36,747.20

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Solution

The fourth proportional to 147,555.20, 221,332.80 and 36,747.20 is: 55,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,555.20 : 221,332.80 = 36,747.20 : x
  2. Step 2: Convert to fraction form
    147,555.20/221,332.80 = 36,747.20/x
  3. Step 3: Cross multiply
    147,555.20x = 221,332.80 × 36,747.20
  4. Step 4: Simplify right side
    147,555.20x = 8,133,360,668.16
  5. Step 5: Solve for x
    x = 8,133,360,668.16/147,555.20
  6. Step 6: Final answer
    x = 55,120.80

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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.