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Finding the Fourth Proportional to 116,806.95, 161,263.61 and 76,590.87

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Solution

The fourth proportional to 116,806.95, 161,263.61 and 76,590.87 is: 105,741.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,806.95 : 161,263.61 = 76,590.87 : x
  2. Step 2: Convert to fraction form
    116,806.95/161,263.61 = 76,590.87/x
  3. Step 3: Cross multiply
    116,806.95x = 161,263.61 × 76,590.87
  4. Step 4: Simplify right side
    116,806.95x = 12,351,319,806.29
  5. Step 5: Solve for x
    x = 12,351,319,806.29/116,806.95
  6. Step 6: Final answer
    x = 105,741.31

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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.