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Finding the Fourth Proportional to 140,948.48, 194,508.32 and 77,290.32

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Solution

The fourth proportional to 140,948.48, 194,508.32 and 77,290.32 is: 106,660.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,948.48 : 194,508.32 = 77,290.32 : x
  2. Step 2: Convert to fraction form
    140,948.48/194,508.32 = 77,290.32/x
  3. Step 3: Cross multiply
    140,948.48x = 194,508.32 × 77,290.32
  4. Step 4: Simplify right side
    140,948.48x = 15,033,610,295.46
  5. Step 5: Solve for x
    x = 15,033,610,295.46/140,948.48
  6. Step 6: Final answer
    x = 106,660.32

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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.