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Finding the Fourth Proportional to 153,506.28, 211,837.28 and 85,522.02

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Solution

The fourth proportional to 153,506.28, 211,837.28 and 85,522.02 is: 118,019.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,506.28 : 211,837.28 = 85,522.02 : x
  2. Step 2: Convert to fraction form
    153,506.28/211,837.28 = 85,522.02/x
  3. Step 3: Cross multiply
    153,506.28x = 211,837.28 × 85,522.02
  4. Step 4: Simplify right side
    153,506.28x = 18,116,751,669.30
  5. Step 5: Solve for x
    x = 18,116,751,669.30/153,506.28
  6. Step 6: Final answer
    x = 118,019.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.