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Finding the Fourth Proportional to 100,332.63, 138,460.59 and 55,014.75

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Solution

The fourth proportional to 100,332.63, 138,460.59 and 55,014.75 is: 75,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,332.63 : 138,460.59 = 55,014.75 : x
  2. Step 2: Convert to fraction form
    100,332.63/138,460.59 = 55,014.75/x
  3. Step 3: Cross multiply
    100,332.63x = 138,460.59 × 55,014.75
  4. Step 4: Simplify right side
    100,332.63x = 7,617,374,743.70
  5. Step 5: Solve for x
    x = 7,617,374,743.70/100,332.63
  6. Step 6: Final answer
    x = 75,921.21

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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.