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Finding the Fourth Proportional to 172,504.80, 238,084.80 and 100,870.80

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Solution

The fourth proportional to 172,504.80, 238,084.80 and 100,870.80 is: 139,218.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,504.80 : 238,084.80 = 100,870.80 : x
  2. Step 2: Convert to fraction form
    172,504.80/238,084.80 = 100,870.80/x
  3. Step 3: Cross multiply
    172,504.80x = 238,084.80 × 100,870.80
  4. Step 4: Simplify right side
    172,504.80x = 24,015,804,243.84
  5. Step 5: Solve for x
    x = 24,015,804,243.84/172,504.80
  6. Step 6: Final answer
    x = 139,218.18

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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.