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Finding the Fourth Proportional to 124,382.12, 171,675 and 79,051.28

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Solution

The fourth proportional to 124,382.12, 171,675 and 79,051.28 is: 109,108.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,382.12 : 171,675 = 79,051.28 : x
  2. Step 2: Convert to fraction form
    124,382.12/171,675 = 79,051.28/x
  3. Step 3: Cross multiply
    124,382.12x = 171,675 × 79,051.28
  4. Step 4: Simplify right side
    124,382.12x = 13,571,127,635.63
  5. Step 5: Solve for x
    x = 13,571,127,635.63/124,382.12
  6. Step 6: Final answer
    x = 109,108.35

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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.