Home / 102,640.17-141,635.35-57,314.61

Finding the Fourth Proportional to 102,640.17, 141,635.35 and 57,314.61

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Solution

The fourth proportional to 102,640.17, 141,635.35 and 57,314.61 is: 79,089.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,640.17 : 141,635.35 = 57,314.61 : x
  2. Step 2: Convert to fraction form
    102,640.17/141,635.35 = 57,314.61/x
  3. Step 3: Cross multiply
    102,640.17x = 141,635.35 × 57,314.61
  4. Step 4: Simplify right side
    102,640.17x = 8,117,774,847.46
  5. Step 5: Solve for x
    x = 8,117,774,847.46/102,640.17
  6. Step 6: Final answer
    x = 79,089.65

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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.