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Finding the Fourth Proportional to 115,244.64, 172,890.45 and 65,347.02

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Solution

The fourth proportional to 115,244.64, 172,890.45 and 65,347.02 is: 98,033.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,244.64 : 172,890.45 = 65,347.02 : x
  2. Step 2: Convert to fraction form
    115,244.64/172,890.45 = 65,347.02/x
  3. Step 3: Cross multiply
    115,244.64x = 172,890.45 × 65,347.02
  4. Step 4: Simplify right side
    115,244.64x = 11,297,875,693.96
  5. Step 5: Solve for x
    x = 11,297,875,693.96/115,244.64
  6. Step 6: Final answer
    x = 98,033.85

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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.