Home / 102,640.22-141,642.18-57,318.98

Finding the Fourth Proportional to 102,640.22, 141,642.18 and 57,318.98

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Solution

The fourth proportional to 102,640.22, 141,642.18 and 57,318.98 is: 79,099.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,640.22 : 141,642.18 = 57,318.98 : x
  2. Step 2: Convert to fraction form
    102,640.22/141,642.18 = 57,318.98/x
  3. Step 3: Cross multiply
    102,640.22x = 141,642.18 × 57,318.98
  4. Step 4: Simplify right side
    102,640.22x = 8,118,785,282.58
  5. Step 5: Solve for x
    x = 8,118,785,282.58/102,640.22
  6. Step 6: Final answer
    x = 79,099.45

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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.