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Finding the Fourth Proportional to 124,754, 172,164.30 and 68,169.02

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Solution

The fourth proportional to 124,754, 172,164.30 and 68,169.02 is: 94,075.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,754 : 172,164.30 = 68,169.02 : x
  2. Step 2: Convert to fraction form
    124,754/172,164.30 = 68,169.02/x
  3. Step 3: Cross multiply
    124,754x = 172,164.30 × 68,169.02
  4. Step 4: Simplify right side
    124,754x = 11,736,271,609.99
  5. Step 5: Solve for x
    x = 11,736,271,609.99/124,754
  6. Step 6: Final answer
    x = 94,075.31

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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.