Home / 145,739.82-201,115.64-81,205.72

Finding the Fourth Proportional to 145,739.82, 201,115.64 and 81,205.72

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Solution

The fourth proportional to 145,739.82, 201,115.64 and 81,205.72 is: 112,060.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,739.82 : 201,115.64 = 81,205.72 : x
  2. Step 2: Convert to fraction form
    145,739.82/201,115.64 = 81,205.72/x
  3. Step 3: Cross multiply
    145,739.82x = 201,115.64 × 81,205.72
  4. Step 4: Simplify right side
    145,739.82x = 16,331,740,349.46
  5. Step 5: Solve for x
    x = 16,331,740,349.46/145,739.82
  6. Step 6: Final answer
    x = 112,060.93

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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.