Home / 102,478.09-141,420.54-57,159.04

Finding the Fourth Proportional to 102,478.09, 141,420.54 and 57,159.04

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Solution

The fourth proportional to 102,478.09, 141,420.54 and 57,159.04 is: 78,879.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,478.09 : 141,420.54 = 57,159.04 : x
  2. Step 2: Convert to fraction form
    102,478.09/141,420.54 = 57,159.04/x
  3. Step 3: Cross multiply
    102,478.09x = 141,420.54 × 57,159.04
  4. Step 4: Simplify right side
    102,478.09x = 8,083,462,302.68
  5. Step 5: Solve for x
    x = 8,083,462,302.68/102,478.09
  6. Step 6: Final answer
    x = 78,879.91

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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.