Home / 123,381.40-170,266.12-66,792.76

Finding the Fourth Proportional to 123,381.40, 170,266.12 and 66,792.76

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Solution

The fourth proportional to 123,381.40, 170,266.12 and 66,792.76 is: 92,173.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,381.40 : 170,266.12 = 66,792.76 : x
  2. Step 2: Convert to fraction form
    123,381.40/170,266.12 = 66,792.76/x
  3. Step 3: Cross multiply
    123,381.40x = 170,266.12 × 66,792.76
  4. Step 4: Simplify right side
    123,381.40x = 11,372,544,089.29
  5. Step 5: Solve for x
    x = 11,372,544,089.29/123,381.40
  6. Step 6: Final answer
    x = 92,173.89

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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.