Home / 102,434.07-141,381.70-66,561.80

Finding the Fourth Proportional to 102,434.07, 141,381.70 and 66,561.80

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Solution

The fourth proportional to 102,434.07, 141,381.70 and 66,561.80 is: 91,870.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,434.07 : 141,381.70 = 66,561.80 : x
  2. Step 2: Convert to fraction form
    102,434.07/141,381.70 = 66,561.80/x
  3. Step 3: Cross multiply
    102,434.07x = 141,381.70 × 66,561.80
  4. Step 4: Simplify right side
    102,434.07x = 9,410,620,439.06
  5. Step 5: Solve for x
    x = 9,410,620,439.06/102,434.07
  6. Step 6: Final answer
    x = 91,870.02

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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.