Home / 100,501.34-138,685.63-55,179.07

Finding the Fourth Proportional to 100,501.34, 138,685.63 and 55,179.07

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Solution

The fourth proportional to 100,501.34, 138,685.63 and 55,179.07 is: 76,143.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,501.34 : 138,685.63 = 55,179.07 : x
  2. Step 2: Convert to fraction form
    100,501.34/138,685.63 = 55,179.07/x
  3. Step 3: Cross multiply
    100,501.34x = 138,685.63 × 55,179.07
  4. Step 4: Simplify right side
    100,501.34x = 7,652,543,116.44
  5. Step 5: Solve for x
    x = 7,652,543,116.44/100,501.34
  6. Step 6: Final answer
    x = 76,143.69

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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.