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Finding the Fourth Proportional to 147,620.16, 221,037.12 and 77,352.48

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Solution

The fourth proportional to 147,620.16, 221,037.12 and 77,352.48 is: 115,822.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,620.16 : 221,037.12 = 77,352.48 : x
  2. Step 2: Convert to fraction form
    147,620.16/221,037.12 = 77,352.48/x
  3. Step 3: Cross multiply
    147,620.16x = 221,037.12 × 77,352.48
  4. Step 4: Simplify right side
    147,620.16x = 17,097,769,404.06
  5. Step 5: Solve for x
    x = 17,097,769,404.06/147,620.16
  6. Step 6: Final answer
    x = 115,822.73

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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.