Home / 72,147.16-107,641.31-64,682.20

Finding the Fourth Proportional to 72,147.16, 107,641.31 and 64,682.20

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Solution

The fourth proportional to 72,147.16, 107,641.31 and 64,682.20 is: 96,503.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,147.16 : 107,641.31 = 64,682.20 : x
  2. Step 2: Convert to fraction form
    72,147.16/107,641.31 = 64,682.20/x
  3. Step 3: Cross multiply
    72,147.16x = 107,641.31 × 64,682.20
  4. Step 4: Simplify right side
    72,147.16x = 6,962,476,741.68
  5. Step 5: Solve for x
    x = 6,962,476,741.68/72,147.16
  6. Step 6: Final answer
    x = 96,503.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.