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Finding the Fourth Proportional to 100,240.63, 138,332.06 and 55,528.63

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Solution

The fourth proportional to 100,240.63, 138,332.06 and 55,528.63 is: 76,629.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,240.63 : 138,332.06 = 55,528.63 : x
  2. Step 2: Convert to fraction form
    100,240.63/138,332.06 = 55,528.63/x
  3. Step 3: Cross multiply
    100,240.63x = 138,332.06 × 55,528.63
  4. Step 4: Simplify right side
    100,240.63x = 7,681,389,776.88
  5. Step 5: Solve for x
    x = 7,681,389,776.88/100,240.63
  6. Step 6: Final answer
    x = 76,629.50

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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.