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Finding the Fourth Proportional to 147,710.96, 221,478.48 and 68,842.88

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Solution

The fourth proportional to 147,710.96, 221,478.48 and 68,842.88 is: 103,223.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,710.96 : 221,478.48 = 68,842.88 : x
  2. Step 2: Convert to fraction form
    147,710.96/221,478.48 = 68,842.88/x
  3. Step 3: Cross multiply
    147,710.96x = 221,478.48 × 68,842.88
  4. Step 4: Simplify right side
    147,710.96x = 15,247,216,421.22
  5. Step 5: Solve for x
    x = 15,247,216,421.22/147,710.96
  6. Step 6: Final answer
    x = 103,223.32

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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.