Home / 138,714.37-208,083.86-38,875.77

Finding the Fourth Proportional to 138,714.37, 208,083.86 and 38,875.77

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Solution

The fourth proportional to 138,714.37, 208,083.86 and 38,875.77 is: 58,317.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,714.37 : 208,083.86 = 38,875.77 : x
  2. Step 2: Convert to fraction form
    138,714.37/208,083.86 = 38,875.77/x
  3. Step 3: Cross multiply
    138,714.37x = 208,083.86 × 38,875.77
  4. Step 4: Simplify right side
    138,714.37x = 8,089,420,928.05
  5. Step 5: Solve for x
    x = 8,089,420,928.05/138,714.37
  6. Step 6: Final answer
    x = 58,317.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.