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Finding the Fourth Proportional to 100,491.51, 138,673.08 and 59,657.34

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Solution

The fourth proportional to 100,491.51, 138,673.08 and 59,657.34 is: 82,324.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,491.51 : 138,673.08 = 59,657.34 : x
  2. Step 2: Convert to fraction form
    100,491.51/138,673.08 = 59,657.34/x
  3. Step 3: Cross multiply
    100,491.51x = 138,673.08 × 59,657.34
  4. Step 4: Simplify right side
    100,491.51x = 8,272,867,082.41
  5. Step 5: Solve for x
    x = 8,272,867,082.41/100,491.51
  6. Step 6: Final answer
    x = 82,324.04

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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.