Home / 123,389.38-170,278.16-66,800.76

Finding the Fourth Proportional to 123,389.38, 170,278.16 and 66,800.76

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Solution

The fourth proportional to 123,389.38, 170,278.16 and 66,800.76 is: 92,185.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,389.38 : 170,278.16 = 66,800.76 : x
  2. Step 2: Convert to fraction form
    123,389.38/170,278.16 = 66,800.76/x
  3. Step 3: Cross multiply
    123,389.38x = 170,278.16 × 66,800.76
  4. Step 4: Simplify right side
    123,389.38x = 11,374,710,499.40
  5. Step 5: Solve for x
    x = 11,374,710,499.40/123,389.38
  6. Step 6: Final answer
    x = 92,185.49

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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.