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Finding the Fourth Proportional to 123,045.40, 184,568.10 and 66,912.40

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Solution

The fourth proportional to 123,045.40, 184,568.10 and 66,912.40 is: 100,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,045.40 : 184,568.10 = 66,912.40 : x
  2. Step 2: Convert to fraction form
    123,045.40/184,568.10 = 66,912.40/x
  3. Step 3: Cross multiply
    123,045.40x = 184,568.10 × 66,912.40
  4. Step 4: Simplify right side
    123,045.40x = 12,349,894,534.44
  5. Step 5: Solve for x
    x = 12,349,894,534.44/123,045.40
  6. Step 6: Final answer
    x = 100,368.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.