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Finding the Fourth Proportional to 117,256.65, 161,806.50 and 74,810.63

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Solution

The fourth proportional to 117,256.65, 161,806.50 and 74,810.63 is: 103,233.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,256.65 : 161,806.50 = 74,810.63 : x
  2. Step 2: Convert to fraction form
    117,256.65/161,806.50 = 74,810.63/x
  3. Step 3: Cross multiply
    117,256.65x = 161,806.50 × 74,810.63
  4. Step 4: Simplify right side
    117,256.65x = 12,104,845,394.06
  5. Step 5: Solve for x
    x = 12,104,845,394.06/117,256.65
  6. Step 6: Final answer
    x = 103,233.76

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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.