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Finding the Fourth Proportional to 113,374.80, 169,916.40 and 68,954.40

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Solution

The fourth proportional to 113,374.80, 169,916.40 and 68,954.40 is: 103,342.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,374.80 : 169,916.40 = 68,954.40 : x
  2. Step 2: Convert to fraction form
    113,374.80/169,916.40 = 68,954.40/x
  3. Step 3: Cross multiply
    113,374.80x = 169,916.40 × 68,954.40
  4. Step 4: Simplify right side
    113,374.80x = 11,716,483,412.16
  5. Step 5: Solve for x
    x = 11,716,483,412.16/113,374.80
  6. Step 6: Final answer
    x = 103,342.92

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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.