Home / 149,688.89-206,576.76-81,710.45

Finding the Fourth Proportional to 149,688.89, 206,576.76 and 81,710.45

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Solution

The fourth proportional to 149,688.89, 206,576.76 and 81,710.45 is: 112,763.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,688.89 : 206,576.76 = 81,710.45 : x
  2. Step 2: Convert to fraction form
    149,688.89/206,576.76 = 81,710.45/x
  3. Step 3: Cross multiply
    149,688.89x = 206,576.76 × 81,710.45
  4. Step 4: Simplify right side
    149,688.89x = 16,879,478,577.71
  5. Step 5: Solve for x
    x = 16,879,478,577.71/149,688.89
  6. Step 6: Final answer
    x = 112,763.74

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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.