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Finding the Fourth Proportional to 115,888.01, 159,941.66 and 83,726.72

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Solution

The fourth proportional to 115,888.01, 159,941.66 and 83,726.72 is: 115,554.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,888.01 : 159,941.66 = 83,726.72 : x
  2. Step 2: Convert to fraction form
    115,888.01/159,941.66 = 83,726.72/x
  3. Step 3: Cross multiply
    115,888.01x = 159,941.66 × 83,726.72
  4. Step 4: Simplify right side
    115,888.01x = 13,391,390,583.16
  5. Step 5: Solve for x
    x = 13,391,390,583.16/115,888.01
  6. Step 6: Final answer
    x = 115,554.58

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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.