Home / 102,979.08-142,113.96-57,655.80

Finding the Fourth Proportional to 102,979.08, 142,113.96 and 57,655.80

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Solution

The fourth proportional to 102,979.08, 142,113.96 and 57,655.80 is: 79,566.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,979.08 : 142,113.96 = 57,655.80 : x
  2. Step 2: Convert to fraction form
    102,979.08/142,113.96 = 57,655.80/x
  3. Step 3: Cross multiply
    102,979.08x = 142,113.96 × 57,655.80
  4. Step 4: Simplify right side
    102,979.08x = 8,193,694,054.97
  5. Step 5: Solve for x
    x = 8,193,694,054.97/102,979.08
  6. Step 6: Final answer
    x = 79,566.59

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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.