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Finding the Fourth Proportional to 115,585.89, 173,402.33 and 65,689.89

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Solution

The fourth proportional to 115,585.89, 173,402.33 and 65,689.89 is: 98,548.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,585.89 : 173,402.33 = 65,689.89 : x
  2. Step 2: Convert to fraction form
    115,585.89/173,402.33 = 65,689.89/x
  3. Step 3: Cross multiply
    115,585.89x = 173,402.33 × 65,689.89
  4. Step 4: Simplify right side
    115,585.89x = 11,390,779,654.99
  5. Step 5: Solve for x
    x = 11,390,779,654.99/115,585.89
  6. Step 6: Final answer
    x = 98,548.18

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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.