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Finding the Fourth Proportional to 159,045.78, 238,568.74 and 74,744.08

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Solution

The fourth proportional to 159,045.78, 238,568.74 and 74,744.08 is: 112,116.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,045.78 : 238,568.74 = 74,744.08 : x
  2. Step 2: Convert to fraction form
    159,045.78/238,568.74 = 74,744.08/x
  3. Step 3: Cross multiply
    159,045.78x = 238,568.74 × 74,744.08
  4. Step 4: Simplify right side
    159,045.78x = 17,831,600,988.06
  5. Step 5: Solve for x
    x = 17,831,600,988.06/159,045.78
  6. Step 6: Final answer
    x = 112,116.15

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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.