Home / 102,731.59-141,769.78-57,409.57

Finding the Fourth Proportional to 102,731.59, 141,769.78 and 57,409.57

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Solution

The fourth proportional to 102,731.59, 141,769.78 and 57,409.57 is: 79,225.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,731.59 : 141,769.78 = 57,409.57 : x
  2. Step 2: Convert to fraction form
    102,731.59/141,769.78 = 57,409.57/x
  3. Step 3: Cross multiply
    102,731.59x = 141,769.78 × 57,409.57
  4. Step 4: Simplify right side
    102,731.59x = 8,138,941,905.22
  5. Step 5: Solve for x
    x = 8,138,941,905.22/102,731.59
  6. Step 6: Final answer
    x = 79,225.31

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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.