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Finding the Fourth Proportional to 147,669, 221,501.42 and 68,739.08

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Solution

The fourth proportional to 147,669, 221,501.42 and 68,739.08 is: 103,107.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,669 : 221,501.42 = 68,739.08 : x
  2. Step 2: Convert to fraction form
    147,669/221,501.42 = 68,739.08/x
  3. Step 3: Cross multiply
    147,669x = 221,501.42 × 68,739.08
  4. Step 4: Simplify right side
    147,669x = 15,225,803,829.49
  5. Step 5: Solve for x
    x = 15,225,803,829.49/147,669
  6. Step 6: Final answer
    x = 103,107.65

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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.