Home / 102,279.78-141,145.65-56,958.30

Finding the Fourth Proportional to 102,279.78, 141,145.65 and 56,958.30

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Solution

The fourth proportional to 102,279.78, 141,145.65 and 56,958.30 is: 78,602.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,279.78 : 141,145.65 = 56,958.30 : x
  2. Step 2: Convert to fraction form
    102,279.78/141,145.65 = 56,958.30/x
  3. Step 3: Cross multiply
    102,279.78x = 141,145.65 × 56,958.30
  4. Step 4: Simplify right side
    102,279.78x = 8,039,416,276.40
  5. Step 5: Solve for x
    x = 8,039,416,276.40/102,279.78
  6. Step 6: Final answer
    x = 78,602.21

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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.