Home / 104,113.48-143,689.62-61,688.20

Finding the Fourth Proportional to 104,113.48, 143,689.62 and 61,688.20

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Solution

The fourth proportional to 104,113.48, 143,689.62 and 61,688.20 is: 85,137.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,113.48 : 143,689.62 = 61,688.20 : x
  2. Step 2: Convert to fraction form
    104,113.48/143,689.62 = 61,688.20/x
  3. Step 3: Cross multiply
    104,113.48x = 143,689.62 × 61,688.20
  4. Step 4: Simplify right side
    104,113.48x = 8,863,954,016.48
  5. Step 5: Solve for x
    x = 8,863,954,016.48/104,113.48
  6. Step 6: Final answer
    x = 85,137.43

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1.5x scale

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.