Home / 147,038.40-220,648.32-68,137.92

Finding the Fourth Proportional to 147,038.40, 220,648.32 and 68,137.92

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Solution

The fourth proportional to 147,038.40, 220,648.32 and 68,137.92 is: 102,248.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,038.40 : 220,648.32 = 68,137.92 : x
  2. Step 2: Convert to fraction form
    147,038.40/220,648.32 = 68,137.92/x
  3. Step 3: Cross multiply
    147,038.40x = 220,648.32 × 68,137.92
  4. Step 4: Simplify right side
    147,038.40x = 15,034,517,576.29
  5. Step 5: Solve for x
    x = 15,034,517,576.29/147,038.40
  6. Step 6: Final answer
    x = 102,248.92

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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.