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Finding the Fourth Proportional to 108,432.68, 149,640.21 and 60,687.63

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Solution

The fourth proportional to 108,432.68, 149,640.21 and 60,687.63 is: 83,750.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,432.68 : 149,640.21 = 60,687.63 : x
  2. Step 2: Convert to fraction form
    108,432.68/149,640.21 = 60,687.63/x
  3. Step 3: Cross multiply
    108,432.68x = 149,640.21 × 60,687.63
  4. Step 4: Simplify right side
    108,432.68x = 9,081,309,697.60
  5. Step 5: Solve for x
    x = 9,081,309,697.60/108,432.68
  6. Step 6: Final answer
    x = 83,750.67

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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.