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Finding the Fourth Proportional to 100,606.13, 138,836.45 and 58,167.39

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Solution

The fourth proportional to 100,606.13, 138,836.45 and 58,167.39 is: 80,271.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,606.13 : 138,836.45 = 58,167.39 : x
  2. Step 2: Convert to fraction form
    100,606.13/138,836.45 = 58,167.39/x
  3. Step 3: Cross multiply
    100,606.13x = 138,836.45 × 58,167.39
  4. Step 4: Simplify right side
    100,606.13x = 8,075,754,078.78
  5. Step 5: Solve for x
    x = 8,075,754,078.78/100,606.13
  6. Step 6: Final answer
    x = 80,271.00

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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.