Home / 100,483.46-138,638.76-64,694.18

Finding the Fourth Proportional to 100,483.46, 138,638.76 and 64,694.18

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Solution

The fourth proportional to 100,483.46, 138,638.76 and 64,694.18 is: 89,259.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,483.46 : 138,638.76 = 64,694.18 : x
  2. Step 2: Convert to fraction form
    100,483.46/138,638.76 = 64,694.18/x
  3. Step 3: Cross multiply
    100,483.46x = 138,638.76 × 64,694.18
  4. Step 4: Simplify right side
    100,483.46x = 8,969,120,998.41
  5. Step 5: Solve for x
    x = 8,969,120,998.41/100,483.46
  6. Step 6: Final answer
    x = 89,259.68

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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.