Home / 102,082.29-140,879.93-56,770.40

Finding the Fourth Proportional to 102,082.29, 140,879.93 and 56,770.40

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Solution

The fourth proportional to 102,082.29, 140,879.93 and 56,770.40 is: 78,346.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,082.29 : 140,879.93 = 56,770.40 : x
  2. Step 2: Convert to fraction form
    102,082.29/140,879.93 = 56,770.40/x
  3. Step 3: Cross multiply
    102,082.29x = 140,879.93 × 56,770.40
  4. Step 4: Simplify right side
    102,082.29x = 7,997,809,978.07
  5. Step 5: Solve for x
    x = 7,997,809,978.07/102,082.29
  6. Step 6: Final answer
    x = 78,346.69

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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.