Home / 102,399.71-141,312.23-57,080.57

Finding the Fourth Proportional to 102,399.71, 141,312.23 and 57,080.57

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Solution

The fourth proportional to 102,399.71, 141,312.23 and 57,080.57 is: 78,771.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,399.71 : 141,312.23 = 57,080.57 : x
  2. Step 2: Convert to fraction form
    102,399.71/141,312.23 = 57,080.57/x
  3. Step 3: Cross multiply
    102,399.71x = 141,312.23 × 57,080.57
  4. Step 4: Simplify right side
    102,399.71x = 8,066,181,644.41
  5. Step 5: Solve for x
    x = 8,066,181,644.41/102,399.71
  6. Step 6: Final answer
    x = 78,771.53

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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.