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Finding the Fourth Proportional to 123,348.59, 170,202.83 and 72,342.08

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Solution

The fourth proportional to 123,348.59, 170,202.83 and 72,342.08 is: 99,821.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,348.59 : 170,202.83 = 72,342.08 : x
  2. Step 2: Convert to fraction form
    123,348.59/170,202.83 = 72,342.08/x
  3. Step 3: Cross multiply
    123,348.59x = 170,202.83 × 72,342.08
  4. Step 4: Simplify right side
    123,348.59x = 12,312,825,531.36
  5. Step 5: Solve for x
    x = 12,312,825,531.36/123,348.59
  6. Step 6: Final answer
    x = 99,821.38

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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.