Home / 101,828.90-140,520.20-56,508.86

Finding the Fourth Proportional to 101,828.90, 140,520.20 and 56,508.86

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Solution

The fourth proportional to 101,828.90, 140,520.20 and 56,508.86 is: 77,980.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,828.90 : 140,520.20 = 56,508.86 : x
  2. Step 2: Convert to fraction form
    101,828.90/140,520.20 = 56,508.86/x
  3. Step 3: Cross multiply
    101,828.90x = 140,520.20 × 56,508.86
  4. Step 4: Simplify right side
    101,828.90x = 7,940,635,323.83
  5. Step 5: Solve for x
    x = 7,940,635,323.83/101,828.90
  6. Step 6: Final answer
    x = 77,980.18

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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.